Items tagged “cases”
5,557 results
Article
Rim sign (choledocholithiasis)
The rim sign of choledocholithiasis is a finding seen on contrast-enhanced CT and comprises a faint rim of increased density along the margin of a low-density area of calculus 1.
Article
Baker classification of acetabular erosion in hip hemiarthroplasty
The Baker classification of acetabular erosion in hip hemiarthroplasty is commonly used to grade severity 1-3.
Classification
Acetabular erosion is assessed on frontal radiographs 1:
grade 0: no erosion
grade 1: narrowing of the articular cartilage, no erosion
grade 2: acetabular bone erosi...
Article
Whipple disease (musculoskeletal manifestations)
The musculoskeletal manifestations of Whipple disease are among the most constant and earliest signs of the disease and can mimic rheumatic diseases including rheumatoid arthritis or spondyloarthritis 1-3. Joint symptoms may include migrating polyarthralgia, arthritis, spondylodiscitis, myalgia,...
Article
Post-hydrocephalus corpus callosum damage
Post-hydrocephalus corpus callosum damage is seen both in the setting of, and following treatment for, long-standing hydrocephalus. The exact pathophysiology remains to be fully elucidated but both compression and rapid decompression with resultant changes in morphology have been implicated.
Tw...
Article
Early postoperative intraperitoneal chemotherapy
Early postoperative intraperitoneal chemotherapy (EPIC) is a form of chemotherapy used for the treatment of peritoneal malignancy 1-2. Intraperitoneal chemotherapy is common after cytoreductive surgery for peritoneal malignancy, with the other main method being hyperthermic intraperitoneal chemo...
Article
Dry tap (lumbar puncture)
A dry tap refers to a lumbar puncture where cerebrospinal fluid (CSF) cannot be obtained despite the needle tip being in the thecal sac 1. Dry taps may be associated with needle misplacement or blockage, dehydration, low CSF pressure, severe spinal canal stenosis (including epidural lipomatosis)...
Article
TWIST (time-resolved angiography with interleaved stochastic trajectories)
Time-resolved angiography with interleaved stochastic trajectories (TWIST) is a 3D time-resolved MR angiography (MRA) sequence - being vendor-specific to Siemens.
In comparison to contrast-enhanced MRA techniques that obtain images at a single point in time, time-resolved MRA obtains a series o...
Article
Laimer diverticulum
Laimer diverticula occur in the cervical oesophagus in the posterior midline inferior to the cricopharyngeal muscle 1,2. They are difficult to differentiate from Zenker diverticulum on imaging and endoscopy can be helpful in determining the exact location of the diverticulum 1-3.
Epidemiology
...
Article
Investigating strabismus (summary)
This is a basic article for medical students and other non-radiologists
Strabismus, commonly known as "crossed eyes" or "squint," is a visual disorder characterised by the misalignment of the eyes 1.
Reference article
This is a summary article; there is no more in-depth reference article.
Su...
Article
Grelsamer classification of sagittal patellar morphology
The Grelsamer classification of sagittal patellar morphology has some relevance regarding measuring patellar height.
Classification
The Grelsamer classification is based on the ratio of total patellar length to patellar articular surface length on a lateral knee x-ray. Greslamer divided sagit...
Article
Fetal atrioventricular block
Fetal atrioventricular block is a form a fetal bradyarrhythmia often classified into
fetal partial atrioventricular block (PAVB)
fetal complete atrioventricular block (CAVB)
Epidemiology
Fetal atrioventricular block is considered rare finding with reported occurrences of around 1:11,000-20,0...
Article
Gardner-Silengo-Wachtel syndrome
Gardner-Silengo-Wachtel syndrome, also known as genito-palato-cardiac syndrome, is a rare male (46XY) gonadal dysgenesis condition that is assumed to be either an X-linked recessive or an autosomal recessive disorder 1.
Epidemiology
The estimated incidence is at <1 in 1,000,000 live births.
P...
Article
Periorbital necrotising fasciitis
Periorbital necrotising fasciitis is an uncommon but serious condition caused by rapidly spreading periorbital infection with the potential for progressive vascular thrombosis and subcutaneous necrosis.
Clinical presentation
The initial appearance may look like periorbital cellulitis although ...
Article
Pancreatic cystosis
Pancreatic cystosis is a rare abdominal manifestation of cystic fibrosis characterised by the presence of multiple epithelium-lined macroscopic cysts that replace the pancreatic parenchyma in patients with cystic fibrosis. It is typically an asymptomatic incidental imaging diagnosis and the cyst...
Article
Recurrent carpal tunnel syndrome
Recurrent carpal tunnel syndrome is the persistence or re-occurrence of carpal tunnel syndrome (CTS) symptoms after carpal tunnel release surgery.
Epidemiology
The re-operation rate for new or persistent CTS symptoms is 1-3% 1-3.
Pathology
Persistence or re-occurrence of CTS symptoms may be ...
Article
Woodhouse-Sakati syndrome
Woodhouse-Sakati syndrome is a rare autosomal recessive genetic disorder characterised by neurodegeneration resulting from mutations in the DCAF17 gene.
Clinical presentation
Its primary clinical features involve endocrine abnormalities, such as hypogonadism, the absence of secondary sexual ch...
Article
Signet ring sign (renal papillary necrosis)
The signet ring sign has been described as one of the possible appearances of the papillary excavation seen in renal papillary necrosis on intravenous urography or retrograde urography 1. The contrast fills a circumferential necrotic cavity around the tip of the necrotic papilla.
See also
sign...
Article
Basilar process
The basilar process, also known as the mammillar or papillar process, is a rare anatomical variant of the occipital bone that is part of the spectrum of occipital vertebrae 1.
Epidemiology
The basilar process is a rare variant, with a reported prevalence of 4% 2.
Clinical presentation
A basi...
Article
Prebasioccipital arch
The prebasioccipital arch is a rare anatomical variant of the occipital bone that is part of the spectrum of occipital vertebrae 1.
Epidemiology
The prebasioccipital arch is a very rare variant; one study reported a prevalence of 0.025% 2.
Clinical presentation
The prebasioccipital arch is a...
Article
Investigating amblyopia (summary)
This is a basic article for medical students and other non-radiologists
Amblyopia, often referred to as a "lazy eye", is a vision development disorder where an eye fails to achieve normal visual acuity, despite the use of prescription spectacles or contact lenses.
Reference article
This is a ...
Unable to process the form. Check for errors and try again.