Articles
Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.
1,074 results found
Article
Ball on tee sign (kidney)
The ball-on-tee sign, golf ball-on-tee sign, or egg in cup appearance, refers to a urographic pattern of papillary excavation that may be seen with renal papillary necrosis.
The sign occurs when contrast material fills central excavations in the papilla of the interpolar region giving a ball-on...
Article
Renal coloboma syndrome
Renal coloboma syndrome (also known as papillorenal syndrome) is a rare condition that primarily affects kidney and eye development.
Affected individuals typically have hypoplastic kidneys, which can lead to end-stage renal disease. Approximately 10% of children with hypodysplastic kidneys have...
Article
Urinary tract dilatation classification
The urinary tract dilatation (UTD) classification system is a proposed unified classification of urinary tract dilatation for prenatal and postnatal care. This classification was developed by the collaboration of clinicians from eight societies (American College of Radiology (ACR), American Inst...
Article
Global testicular infarction
Global testicular infarction is fortunately rare, and is most commonly seen in the context of testicular torsion. However rarely it can occur secondary to other causes.
Diagnosis
Doppler ultrasound is the mainstay for assessing testicular blood flow and diagnosing ischemia 1. Hyperemia and in...
Article
Branchio-oculo-facial syndrome
Branchio-oculo-facial syndrome (BOFS) is a very rare autosomal dominant genetic disorder that is characterized clinically by abnormalities affecting the eyes, craniofacial structures, and branchial sinuses.
Epidemiology
More than 80 cases have been reported in the global literature since its f...
Article
Surgical positions
There are various classic surgical positions for patients to be placed in for procedures, which have been adopted/repurposed for interventional radiology and some diagnostic procedures:
lithotomy position
Trendelenburg position
reverse Trendelenburg position
lateral decubitus position
Litho...
Article
Yo-yo reflux
Yo-yo reflux or uretero-ureteral reflux is noted in partial ureteral duplication 1,2. It is the reflux of urine from the normal caliber ureter to the dilated ureter.
Radiographic features
Yo-yo reflux should be suspected when there is asymmetric dilatation of ureters. It can be diagnosed with...
Article
Intravenous drug user
Intravenous drug users (IVDU) are people who inject non-medical and controlled medical drugs (and may have substance use disorder) for non-medical purposes. Frequently injected drugs include heroin, cocaine, prescription opioids and methamphetamine 6.
Terminology
More neutral terms such as pe...
Article
Angiomyolipoma
Angiomyolipomas (AMLs) refer to hamartomatous lesions composed of abnormal, thick-walled vessels (angio-) and varying amounts of smooth muscle–like cells (-myo-) and adipose tissue (-lipoma). They predominantly occur in the kidney (renal angiomyolipoma) but occasionally occur in other organs suc...
Article
Bladder cancer
Bladder cancer is a broad term used to describe all types of cancers affecting the urinary bladder:
transitional cell carcinoma (urinary bladder): most common primary neoplasm of the bladder
squamous cell carcinoma (urinary bladder): accounts for around 3-8% of all bladder cancers
adenocarcin...
Article
Musculus compressor nuda
Musculus compressor nuda is a small striated musculotendinous sling of the bulbocavernosus muscle, which extends from the anterior and lateral surfaces of the proximal bulbous urethra.
Musculus compressor nuda causes the proximal bulbous urethra to form a symmetric convex cone shape where the t...
Article
Whitmore-Jewett staging system
The Whitmore-Jewett staging system (also known as the Jewett staging system or ABCD system) is a superseded staging system for prostate cancer. It was developed by the American Urological Association (AUA). Most societies (including AUA) and clinicians now advocate and use the TNM staging system...
Article
Lactate dehydrogenase
Lactate dehydrogenase (LDH or LD) is a key enzyme in most cells, catalyzing the reversible conversion of pyruvate to L-lactate. Its contemporaneous main clinical uses are limited primarily to the investigation of hemolysis, serous collections and as a tumor marker.
Physiology
L-lactate dehydro...
Article
Glomerulocystic kidney disease
Glomerulocystic kidney disease (GCKD) is a rare cystic kidney disease.
Epidemiology
Associations
Following syndromic associations have been proposed 4:
Down syndrome
asplenia with cardiovascular anomalies
multiple acyl-CoA dehydrogenase deficiency
Jeune syndrome
Marden-Walker syndrome
...
Article
Umbilicus
The umbilicus is the fibrous remnant of the fetal attachment of the umbilical cord after birth.
Gross anatomy
All layers of the anterior abdominal wall fuse at the umbilical ring, a small round defect in the linea alba located just inferior to the midpoint between the xiphoid process of the st...
Article
Acute tubular necrosis
Acute tubular necrosis (ATN) is a common type of acute kidney injury, particularly in hospitalized patients.
Pathology
Acute tubular necrosis is characterized by renal tubular cell damage and death and is usually caused by ischemic or nephrotoxic insults. Deposition of cellular debris within ...
Article
Cystic degeneration of benign prostatic hyperplasia
Cystic degeneration of benign prostatic hyperplasia (BPH) is one of the forms that a BPH nodule may present as. They are often located in the transition zone. They may have irregular shapes, can be of variable size and may contain hemorrhage or calcifications. Patients usually have symptoms of u...
Article
Ductus deferens cyst
A ductus deferens cyst (also known as a vas deferens cyst) is a type of juxtaprostatic - extraprostatic cyst. They are usually located along the course of the ductus deferens and superior to the prostate. They can arise from congenital abnormalities of the vas deferens or acquired causes such as...
Article
RENAL nephrometry scoring system
The RENAL nephrometry scoring system was developed to categorize renal masses into low, intermediate and high complexity, based on cross-sectional imaging findings. Its purpose is to aid in decision making, patient counseling, surgical planning, and patient follow-up, as well as academic reporti...
Article
Tubulocystic renal cell carcinoma
Tubulocystic renal cell carcinomas are a rare subtype of renal cell carcinoma (RCC) with predominantly cystic appearance.
Terminology
Tubulocystic renal cell carcinoma was first identified as a distinct histopathologic entity in 2005, and subsequently acknowledged as an independent disease cat...
Article
International Society of Urological Pathology Vancouver classification of renal neoplasia
The International Society of Urological Pathology Vancouver classification of renal neoplasia is a now-outdated classification of renal tumors published in 2013. It formed the basis for the most recent revision of the WHO classification of tumors of the kidney, published in 2016. For reference, ...
Article
WHO classification of tumors of the kidney
The World Health Organizatiοn (WHO) classification of tumors of the kidney is the most commonly used pathologic classification system for such disorders. The current revision, part of the 4th edition of the WHO series, was published in 2016 as part of the WHO Classification of Tumors of the Urin...
Article
Multilocular cystic renal neoplasm of low malignant potential
Multilocular cystic renal neoplasm of low malignant potential is a low-grade adult renal tumor composed entirely of numerous cysts. The entity was previously known as multilocular cystic renal cell carcinoma, which usually had clear cell morphology, but was redefined in the 2016 WHO classificati...
Article
Hockey stick sign (disambiguation)
The hockey stick sign can refer to a variety of different signs and appearances:
hockey stick sign (thyroid hemiagenesis)
hockey stick sign (Creutzfeldt-Jakob disease)
hockey stick sign (ureters)
Article
Estimated glomerular filtration rate
The estimated glomerular filtration rate (eGFR) is widely used as a surrogate marker of renal function and is mathematically derived from the patient's serum creatinine, using their age, sex and ethnicity. There is some controversy over whether ethnicity should be included in the calculations.
...
Article
Fallopian (disambiguation)
The eponym fallopian may refer to:
fallopian canal (facial nerve canal)
fallopian tube (uterine duct)
fallopian ligament (inguinal ligament)
History and etymology
It is named after Gabriele Falloppio (also known by his Latin name Fallopius), Italian anatomist (1523-1562). Despite the eponym...
Article
Utricle (disambiguation)
The utricle may refer to:
utricle of the inner ear
utricle of the prostatic urethra
Article
Extramammary Paget disease
Extramammary Paget disease (EMPD) is the rarer non-breast form of Paget disease of the nipple. It is considered a form of adenocarcinoma of the apocrine glandular tissue. In men, the penis and scrotum are most frequently involved, and in women the vulva. Nodal and distant organ metastatic diseas...
Article
TWIST score
The Testicular Workup for Ischemia and Suspected Torsion (TWIST) score is a clinical decision tool used for the workup and management of acute scrotal emergencies where torsion is suspected. It uses history and examination to estimate the likelihood of torsion. Currently, validation of the clini...
Article
Seminal vesicle abscess
Seminal vesical abscesses are a complication of seminal vesiculitis.
Clinical presentation
The associated symptoms can be non-specific and are those typically associated with urinary tract infections:
dysuria
fever
perineal or abdominal pain
urinary retention
ejaculation of purulent mate...
Article
Isthmus (disambiguation)
Isthmus (plural: isthmi) is an anatomical term and refers to a slender structure joining two larger components. Some of these uses of the word isthmus are now rarely used or only seen in older texts and articles:
isthmus (aorta)
isthmus (auditory tube)
isthmus (auricle of the ear)
isthmus (c...
Article
Mainzer-Saldino syndrome
Mainzer-Saldino syndrome (also known as conorenal syndrome (CRS)) is a rare condition and is one of the ciliopathies. It is due to mutations in the IFT140 gene, whose protein product is one of the six parts of the intraflagellar transport complex A.
The syndrome's key characteristics are:
phal...
Article
Hydroureter
Hydroureter refers to abnormal dilation (>3 mm) of the ureter and may occur in combination with hydronephrosis.
Terminology
The term, megaureter, is usually reserved for ureters >7 mm in diameter. The term hydroureteronephrosis (or hydronephroureterosis) may be used when ureteric dilatation o...
Article
McDonald and McClellan's classification of crossed renal ectopias
McDonald and McClellan classified crossed renal ectopia into four types 1:
bilateral crossed renal ectopia without fusion
unilateral crossed renal ectopia
bilaterally crossed renal ectopia: represents 90% of all crossed ectopias and includes crossed fused renal ectopia
crossed unfused rena...
Article
Pediatric cystic nephroma
Pediatric cystic nephromas, previously known as multilocular cystic nephromas, are rare benign renal neoplasms occurring in children. As of the 2016 WHO classification, they are considered distinct from adult cystic nephromas 1,2.
Terminology
Evolving terminology regarding cystic nephromas and...
Article
Renal cysts and diabetes syndrome
Renal cysts and diabetes syndrome (RCAD), also known as maturity-onset diabetes of the young, type 5 (MODY5), refers to the combination of renal cortical cysts and diabetes mellitus in patients with mutations in the HNF1B gene. When renal cysts are associated with these mutations without disturb...
Article
Strangury
Strangury (also known as stranguria or vesical tenesmus) describes a symptom of unintentional agonising micturition of small volumes of urine or marked desire to do so, often without any urine passed. In many cases the bladder is empty or near empty.
It has been described as the urological form...
Article
Hurley stick ureters
Hurley stick ureters refers to the widening of the distal ureters with abnormal lateral and upward curvature instead of normal oblique intramural course in excretory urogram. The appearance of distal ureter resembles hurley stick used in the traditional Irish game of hurling. This is seen in bla...
Article
Sacral nerve stimulator
Sacral nerve stimulators are a form of neuromodulation therapy. They are used for urogenital disorders such as urge urinary incontinence and detrusor hyperactivity, and colorectal disorders such as chronic constipation refractory to conventional medical therapy, and fecal incontinence. There is ...
Article
Brachytherapy seed migration to the lung
Brachytherapy seed migration to the lung is a known complication of radioactive seed therapy. These seeds are used for localized treatment of malignancies, most commonly prostate cancer.
Regarding staging, nearly 79% of the cases are localized, 12% are regional and 5% present with distant disea...
Article
Perinephric bridging septa
Perinephric bridging septa or septa of Kunin are composed of numerous fibrous lamellae which traverse the perinephric fat 1,2 where they suspend the kidneys within the perirenal space. The septa may act as a barrier or conduit for the spread of pus, blood, urine, and neoplasms in the perinephric...
Article
Hairy kidney sign (Erdheim-Chester disease)
The hairy kidney sign refers to the soft tissue ring of perirenal infiltration seen on cross-sectional imaging studies in Erdheim-Chester disease and is considered to be pathognomonic of this disease. The ‘‘hairy’’ description refers to the associated thickening of the bridging perirenal septa (...
Article
Tumors of the seminal vesicles
Tumors of the seminal vesicles usually represent contiguous invasion of the seminal vesicles from malignancies in adjacent organs, most commonly the prostate. Tumors originating de novo within the seminal vesicles themselves are much rarer.
Epithelial tumors
adenocarcinoma of the seminal vesic...
Article
Renal epithelial cyst
Renal epithelial cysts, also known as simple renal cysts, are common benign lesions of the renal parenchyma. Since they are uncommon in children and progressively more common with age, they are considered acquired lesions.
Epidemiology
overall high prevalence
increasingly common with age 1,2
...
Article
Intramural fat of the urinary bladder
Intramural fat of the urinary bladder is an occasional benign finding on CT/MRI.
Epidemiology
The incidence of this finding in histopathological studies is up to 4%. There is a male predominance ref.
Clinical presentation
It is typically an incidental, asymptomatic finding.
Pathology
Adip...
Article
Foley catheter
The Foley catheter is a urinary catheter with a balloon at its distal tip, which is inflated post-insertion to ensure that the catheter remains in the bladder. Originally inflation of the balloon required the instillation of fluid or air via a separate port, next to the external end of the cathe...
Article
Peritoneal dialysis catheter
A peritoneal dialysis catheter is a flexible tube designed for peritoneal dialysis, the most well-known and widely-used being the Tenckhoff catheter.
From an MRI perspective, the Tenckhoff catheter has an extraperitoneal tungsten tip which is MRI-compatible, however, it will cause some suscept...
Article
Interstitial cystitis
Interstitial cystitis, also known as bladder pain syndrome, is a chronic, non-infectious, inflammatory condition of poorly understood etiology that affects the urinary bladder. It is defined as urinary bladder pain and irritative symptoms of more than six months duration. It usually represents a...
Article
Fungal ball of the urinary tract
Fungal balls of the urinary tract, also known as fungal bezoars or mycetomas of the urinary tract, are a rare manifestation of funguria, usually candiduria.
Epidemiology
While candiduria may be seen in approximately 20% of hospitalized patients 1, development of fungal balls is considered very...
Article
Selenium toxicity
Selenium toxicity (rarely: hyperselenemia) is caused by excessive intake of the non-metallic element selenium (Se) in the diet.
Epidemiology
It is less common than selenium deficiency. It is most frequently seen in some parts of India, in which there are naturally high levels of selenium in th...
Article
Canal of Nuck hernia
Canal of Nuck hernias are rare and occur in female children. They are caused by a failure of complete obliteration of the canal of Nuck with a connection to the peritoneal cavity and transmitted intra-abdominal contents (e.g. bowel, omentum, fluid, ovary, fallopian tube and/or urinary bladder).
...
Article
Venous intravasation
Venous intravasation is the unintended introduction of radiographic contrast material into the local venous system. It is a well-recognized phenomenon during retrograde urethrograms 1,2 and hysterosalpingograms (HSG), although can occur with other invasive procedures in the vicinity of venous pl...
Article
Emphysematous prostatitis
Emphysematous prostatitis refers to gas-forming infection of the prostate, nearly always occurring concurrently with prostatic abscess.
Epidemiology
The condition is rare, most commonly presenting in males aged 50-70 years and usually confined to certain patient subgroups 1,2.
Risk factors
R...
Article
Clear cell renal cell carcinoma
Clear cell renal cell carcinoma is the most common type of renal cell carcinoma.
Epidemiology
The average age of onset of sporadic clear cell renal carcinoma is 61 years. In cases associated with von Hippel-Lindau disease, the average age of onset is 37 years 1.
Clinical presentation
Patien...
Article
Cystinosis
Cystinosis, also known as Abderhalden Kaufmann Lignac syndrome, is the most common hereditary cause of renal Fanconi syndrome. Cystinosis is one of the lysosomal storage disorders.
Epidemiology
It has a reported incidence of 1:192,000 1. Cystinosis is typically diagnosed in infancy.
Clinica...
Article
Fistula
A fistula (plural: fistulae or fistulas) is an abnormal connection between two epithelial surfaces such as between hollow organs, skin or vessels. Conventionally, the name of a specific fistula type is a combination of the two organs. For discussions of specific fistulae please refer to individu...
Article
Lamellated
The term lamellated (or laminated which means the same thing) is a radiopathological term used to describe the layered appearance of many calculi, including those of the renal tract, the salivary glands, and the biliary tree. The internal structure of these calculi has been likened to that of an...
Article
Epithelioid angiomyolipoma of kidney
Epithelioid angiomyolipomas (EAML) are rare variants of the more common renal angiomyolipoma. They have malignant potential.
Pathology
Like more common renal angiomyolipomas, EAMLs are considered perivascular epithelioid cell tumors (PEComas). EAMLs were regarded as a separate renal mass entit...
Article
Testicular sarcoidosis
Testicular sarcoidosis is a rare manifestation of sarcoidosis. In cases of urogenital sarcoidosis, more commonly the epididymis is affected.
Epidemiology
Testicular sarcoidosis is more common in African-American patients, as are other forms of sarcoidosis 1. Up to 5% of patients with chronic s...
Article
Hermaphroditism
Hermaphroditism states are a result of abnormalities in embryonic development and may have mixed characteristics of each sex, with variable clinical manifestations. True hermaphroditism is defined as the simultaneous presence in a single individual of both testicular and ovarian tissues, that may...
Article
Ketamine bladder
Ketamine bladder or ketamine bladder syndrome refers to lower urinary tract symptoms associated with long-term ketamine use.
Epidemiology
The presence of lower urinary tract symptoms in long-term ketamine users has been identified to be as high as 90% in some studies 1.
Clinical presentation
...
Article
Labeled imaging anatomy cases
This article lists a series of labeled imaging anatomy cases by body region and modality.
Brain
CT head: non-contrast axial
CT head: non-contrast coronal
CT head: non-contrast sagittal
CT head: non-contrast axial with clinical questions
CT head: angiogram axial
CT head: angiogram coronal
...
Article
Hyperdense renal cyst
Benign hyperattenuating renal cysts are also known as hyperdense renal cysts.
Epidemiology
They are frequently found in patients with either acquired cystic renal disease or autosomal dominant polycystic renal disease 1.
Radiographic features
homogeneously hyperattenuating (even when a narro...
Article
Testicular embryonal cell carcinoma
Testicular embryonal cell carcinoma is a type of non-seminomatous germ cell tumor and is the second most common histological type of testicular tumor after seminoma 3.
Epidemiology
Incidence peaks at around 25-30 years.
Pathology
It may occur as part of a mixed germ cell tumor (more common a...
Article
Testicular choriocarcinoma
Testicular choriocarcinoma is a type of non-seminomatous germ cell tumor.
Epidemiology
Incidence peaks at around 20-30 years of age.
Clinical presentation
Can be variable with some patients initially presenting with metastases.
Pathology
It is most commonly detected as a component of a mi...
Article
Cystocele
A cystocele, also known as a prolapsed bladder, is a form of pelvic organ prolapse where the bladder descends inferiorly and posteriorly into the vagina and perineum. It may be accompanied by prolapse of other pelvic organs.
Radiographic features
CT / MRI
Sagittal images are particularly use...
Article
Vestibule of the vulva
The vestibule of the vulva (vestibule of the vagina in some texts 2) is the area between the labia minora, and posterior to the glans of the clitoris. It marks the boundary between the vagina and the vulva. The urethra, vagina and the greater vestibular glands open out into the vestibule.
Article
von Hippel-Lindau disease (mnemonic)
Features of von Hippel-Lindau disease can be remembered by the mnemonic:
HIPPEL
Mnemonic:
H: hemangioblastoma of CNS
I: increased risk of renal cell cancer
P: pheochromocytoma
P: pancreatic lesions (cyst, cystadenoma, cystadenocarcinoma, neuro-endocrine tumors)
E: eye and ear dysfunction ...
Article
Hymen
The hymen (plural: hymens) is a thin fold of mucous membrane which extends across the vaginal opening, usually with some form of internal defect, which permits the free passage of normal menses.
It usually ruptures during coitus with the remnants, usually in the form of small tags of tissue ar...
Article
External iliac lymph nodes
The external iliac lymph nodes can be found surrounding the external iliac artery and act as the draining nodes for several regions of the pelvis and lower limb.
Gross anatomy
The external iliac lymph nodes lie anterior to the internal iliac lymph nodes and usually form three separate subgrou...
Article
Frenulum (disambiguation)
Frenulum (plural: frenula) is an anatomical term and refers to a small fold of soft tissue that checks the movement of an anatomical part.
frenulum (clitoris)
frenulum (ileocecal valve)
frenulum (labia minora)
frenulum (penis)
frenulum (tongue)
History and etymology
Frenulum derives from ...
Article
Labia minora
The labia minora (singular: labium minus) are small glabrous cutaneous folds lying between and just superior to the labia majora. At their posterior margin the labia may be conjoined by a thin cutaneous fold of skin, the frenulum of the labia (also known as the fourchette or posterior commissure...
Article
Labia majora
The labia majora (singular: labium majus) form the anteroinferior most part of the vulva, they are continuous with the mons pubis anteriorly and the perineum posteriorly. The labia are apposed in the midline forming the, externally-visible, pudendal cleft.
Gross anatomy
The labia majora have ...
Article
Paraurethral duct
The paraurethral ducts (or Skene ducts) drain the paraurethral glands of the female urethra. There is one duct, draining each gland, on each side, just proximal to the external urethral meatus.
History and etymology
Skene ducts are named after the Scottish-American gynecologist Alexander John...
Article
Mons pubis
The mons pubis (plural: montes pubis) refers to the rounded protuberant skin-covered soft tissue overlying the symphysis pubis (in both sexes). It is most prominent in adult females.
In females it forms the most superior part of the vulva and it is also called the mons Veneris (plural: montes V...
Article
Vulva
The vulva (plurals: vulvas or vulvae), also known as the pudendum, (plural: pudenda) is the collective term given to the female external genitalia.
The vulva consists of the:
mons pubis
labia majora
labia minora
clitoris
bulbs of the vestibule
vestibule of the vulva
vaginal opening
hyme...
Article
Unilateral renal enlargement (differential)
Unilateral renal enlargement can arise from a number of causes which include:
duplicated pelvicalyceal system
crossed-fused renal ectopia
renal arterial infarction
renal vein thrombosis
anatomic compression of the renal vein
compensatory hypertrophy
acute pyelonephritis
obstructive uropa...
Article
Bulbourethral glands
The bulbourethral glands, a.k.a. Cowper glands, are paired small pea-sized glands of the male reproductive tract, homologous to the female Bartholin glands.
Gross anatomy
The bulbourethral glands are located in the deep perineal pouch posterolateral to the membranous portion of the male urethr...
Article
Perineal membrane
The perineal membrane is a thin triangular horizontal layer of dense tough fascia in the perineum which divides the urogenital triangle into superficial (inferior) and deep (superior) perineal pouches.
It attaches to the inferior margins of the ischiopubic rami, enclosing the anterior portion o...
Article
Testicular fracture
Testicular fracture is a break in the parenchyma of the testis as a result of blunt trauma.
Radiographic features
Ultrasound
A fracture line can be seen as a hypoechoic and avascular area within the testis but is only seen in 17% of cases 1.
Disruption of the tunica albuginea suggests test...
Article
Testicular dislocation
Testicular dislocation is a rare condition in which a testis is dislocated from its normal position within the scrotum to another location, most commonly the superficial inguinal pouch.
Epidemiology
The condition mainly occurs in younger men with a mean age of 25 years 2.
Clinical presentatio...
Article
Testicular lipomatosis
Testicular lipomatosis is a rare condition characterized by homogeneously hyperechoic non-shadowing lesions within the testes on ultrasound without flow on color Doppler. It is seen as a component of PTEN (phosphatase and tensin homolog) gene hamartoma tumor syndrome (PHTS) which includes:
Cowd...
Article
Urine
Urine represents the biofluid end-product of the renal filtration process. Normally it is a transparent, sterile, pale-yellow liquid (although clearly color varies with the person's hydration status).
Urine is one of the most easily-accessible biofluids in the human body and has been intensive...
Article
Ureteric jet
Ureteric jets, also known as ureteral jets, are the visualization of the normal physiological periodic efflux of urine from the distal end of each ureter into the bladder.
Pathology
When the urine passing down the ureter reaches the vesicoureteric junction (VUJ), it is forced out into the bla...
Article
Loin pain hematuria syndrome
Loin pain hematuria syndrome is a rare disorder in which patients suffer episodes of severe unilateral or bilateral flank pain with microscopic or gross hematuria in the absence of renal pathology.
Epidemiology
Approximately 70% of patients are young females with a peak incidence in the third ...
Article
Tunica (disambiguation)
Tunica is a word used in anatomy to refer to a type of covering.
tunica adventitia (also known as tunica externa)
tunica albuginea
tunica albuginea (clitoris)
tunica albuginea (ovary)
tunica albuginea (penis)
tunica albuginea (testis)
tunica intima
tunica media
tunica vaginalis
tunica...
Article
Tunica albuginea (testis)
The tunica albuginea (TA) forms the fibrous covering of the testis and is itself covered by the serous layer, the tunica vaginalis. The covering is total, except for at the point of attachment of the epididymis, and a small defect posteriorly where the spermatic cord vessels enter and leave the ...
Article
Tunica vaginalis (testis)
The tunica vaginalis (TV) represents the investing serosal covering of the testis. It forms as the embryological testis descends and passes out through the superficial inguinal ring carrying its abdominal peritoneal covering with it.
The tunica vaginalis is said to consist of two layers, the pa...
Article
PSA density
The PSA density (PSAD), is a calculation performed at diagnosis and is the serum prostate specific antigen (PSA) level (ng/mL) divided by the volume of the prostate gland (mL), resulting in a value with the units, ng/mL2 1. Prostate volume is calculated from TRUS measurements 2,3.
Alternativel...
Article
Prostatic venous plexus
The prostatic venous plexus (also known as Santorini's plexus) is a network of veins around the anterolateral aspect of the prostate and anterior to the bladder. Tributaries include:
deep dorsal vein of the penis
anterior vesical rami
prostatic rami
The receipt of blood from the vesical and ...
Article
Chyluria
Chyluria is the finding of chyle in the urine, and is due to a pathological communication between the lymphatic system and the renal tract. It is most commonly found in South-East Asia, where it is due to lymphatic filariasis, but in the non-tropical world it is most commonly encountered after t...
Article
Body imaging
Body imaging is the term assigned to cross-sectional imaging of the body, which radiologically refers to the chest, abdomen and pelvis. It is often used by radiologists who report this region (sometimes known as body imagers/radiologists) to differentiate their primary area of interest from othe...
Article
Fanconi syndrome
Fanconi syndrome describes generalized proximal renal tubule dysfunction causing impaired reabsorption of many urinary solutes.
Clinical presentation
Clinical features include poor growth, fatigue, dehydration, polyuria, muscle weakness, and bone pain. Features on a basic blood panel include ...