Items tagged “stub”
1,311 results found
Article
Right ventricular false tendons
Right ventricular false tendons (RFTs), also known as right ventricular muscular bands, are a much less well-known entity than left ventricular false tendons (LFTs). They are fibromuscular structures that arise from the inner trabeculated myocardial layer of the right ventricle, with a range of ...
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
Osteolipoma
Osteolipomas, also known as ossified lipomas, are rare intracranial masses, typically located in the suprasellar cistern composed of mature adipocytes surrounding by calcified ossification 1. They are a variant of intracranial lipomas which elsewhere, with the exception of tubulonodular pericall...
Article
Corticobulbar tract
The corticobulbar (or corticonuclear) tract originates primarily in Brodmann area 4 and exits at the brainstem to synapse on the lower motor neurons of the cranial nerves bilaterally. The exception to this bilateral connection is the facial nerve and hypoglossal nerve. Innervation to the lower h...
Article
Robinow-Sorauf syndrome
Robinow-Sorauf syndrome (RSS) is a rare, autosomal dominant type of acrocephalosyndactyly syndrome (ACS).
Rather than being a distinct ACS, it has now generally accepted that RSS is, in fact, part of the Saethre-Chotzen syndrome phenotypic spectrum 1. This is due to similar phenotype and both b...
Article
Portal sinus
The portal sinus is an L-shaped venous confluence in the fetal circulation. It is located in the liver, between the left and right intrahepatic portal veins. The umbilical vein drains into the portal sinus at its medial aspect, near the left inferior intrahepatic portal vein 1,2. The ductus veno...
Article
Meniscal maceration
Meniscal maceration is a finding sometimes used on MRI imaging to describe the wasting away of the meniscus or cause it to become soft or separated into constituent elements. It is often used with chronic degenerative conditions although some authors also propose this term in the setting of a te...
Article
Hysterectomy
Hysterectomy (plural: hysterectomies), the surgical resection of the uterus, is the most commonly performed gynecological procedure in the USA 3. It is usually performed electively.
Epidemiology
Approximately 600,000 hysterectomies are performed in the United States annually. After Cesarean se...
Article
Pseudo-Jefferson fracture
A pseudo-Jefferson fracture, or pseudospread of the atlas on the axis, refers to the normal overhanging of the lateral edges of the lateral masses of C1 over the lateral edges of the body of C2 seen in children. Most often, children will display this physiologically until about 7 years of age wh...
Article
Tumor ablation
Tumor ablation, or image-guided tumor ablation, is the direct application of chemical or energy-based (i.e. thermal and non-thermal) treatments to cause local tumor destruction. Techniques include:
energy-based techniques
thermal ablation
radiofrequency ablation (RFA)
microwave ablation (MWA...
Article
Preoperative pulmonary nodule localization
Preoperative pulmonary nodule localization is a CT-guided procedure where a marker is applied to a usually small lung lesion to assist in its surgical identification and resection. The widespread use of video-assisted thoracic surgery (VATS) and the advance in robotically assisted surgical inter...
Article
Sclerosing cholangitis
There are three forms of sclerosing cholangitis:
primary sclerosing cholangitis
IgG4-related sclerosing cholangitis
secondary sclerosing cholangitis
Article
Brachioradial artery
The brachioradial artery, also known as a high origin of the radial artery, represents an anatomical variant of the arterial branching pattern of the upper limb 1,2. It represents an artery originating proximal to the cubital fossa that will go on to form the radial artery. The brachioradial art...
Article
Midtarsal injury (overview)
Injuries of the midtarsal (Chopart) joint complex can be divided into 1:
low-energy: midtarsal sprain
high-energy: Chopart fracture-dislocation
Article
Cluster sign
The cluster sign is a finding on MRI and CT that is associated with pyogenic hepatic abscesses and can help differentiate pyogenic abscesses from other types of liver lesions.
Radiographic features
The cluster sign is best seen on MRI T2-weighted and postcontrast T1-weighted sequences. Small n...
Article
Blood
Blood is a connective tissue usually found in a liquid phase; it comprises a fluid component called plasma (about 55% of the total volume), in which lies the cellular component, comprising several cell lineages, primarily the white blood cells, red blood cells and platelets. In an average adult ...
Article
Hemoglobin SC disease
Hemoglobin SC (HbSC) disease is a hemoglobinopathy, and a common variant of sickle cell disease (SCD). There is coinheritance of one HbS gene and one HbC gene, resulting in a milder phenotype than full-blown sickle cell disease. It most commonly manifests with a proliferative retinopathy. Painfu...
Article
Scaling
Scaling is a linear transformation that changes the size of a mathematical object. The mathematical objects of interest to radiologists that can be scaled are usually image matrices. This simple type of spatial normalization is a common step in image normalization for creating an image data set ...
Article
Cardiogenic pulmonary edema
Cardiogenic pulmonary edema is a subtype of pulmonary edema where the underlying etiology is due to left ventricular dysfunction.
Pathology
Etiology
left heart failure
congestive cardiac failure
mitral regurgitation
aortic stenosis
arrhythmias
myocardial pathology
myocarditis
cardiomyo...
Article
RAPADILINO syndrome
RAPADILINO syndrome is a rare autosomal-recessive syndrome that results from mutations in the RECQL4 gene 1.
Epidemiology
RAPADILINO syndrome is a rare condition, prevalence is unknown. It is, however, more common and was first described in Finnish populations 2.
Pathology
The acronym RAPADI...
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