Items tagged “cases”
5,514 results found
Article
Ophelia syndrome
Ophelia syndrome is the association of Hodgkin lymphoma with an autoimmune limbic encephalitis, as a result of anti-metabotropic glutamate receptor 5 antibodies (mGluR5) 1. In addition to anti-mGluR5, many other antibodies are associated with or implicated in autoimmune encephalitis in the setti...
Article
EBV-associated smooth muscle tumor
Epstein-Barr virus-associated smooth muscle tumors are rare and encountered in immunocompromised individuals.
Epidemiology
These tumors are generally exceedingly rare, and only seen with any frequency in the setting of immunosuppression, particularly in HIV/AIDS patients, but also post-transpl...
Article
Pseudopancreatitis
Pseudopancreatitis refers to the presence of fluid in or around the pancreas in the setting of trauma but in the absence of direct signs of traumatic pancreatic injury. Most patients will have a normal serum lipase level, but amylase has a limited sensitivity and specificity for pancreatic traum...
Article
Axillary vein
The axillary vein is one of the major veins of the upper limb. It is formed by the union of the paired brachial veins and the basilic vein and contributes to the drainage of the axilla, arm and superolateral chest wall.
Summary
origin: formed by the union of the paired brachial veins and the b...
Article
Alzheimer type II glia
Alzheimer type II glia are a type of glial cell. They are a pathological reactive astrocyte seen in the brain, unrelated to Alzheimer disease. They are seen most frequently in Wilson disease, but also in other systemic metabolic disorders, particularly those with elevated ammonia levels, typical...
Article
Eparterial bronchus
The eparterial bronchus is a synonymous term for the right superior lobar bronchus. Its name is derived from the bronchus being the only one originating superior to the level of the pulmonary artery. Conversely, all other bronchi can be referred to by their anatomical relationship to the pulmona...
Article
Rotator crescent
The rotator crescent is the crescent-shaped, thin area of the distal supraspinatus and infraspinatus tendons, which are two major rotator cuff tendons. On its medial border is a thick fibrous reinforcement called the rotator cable.
It is hypothesized that the rotator crescent is shielded from m...
Article
Extramedullary hematopoiesis in the adrenal gland
Extramedullary hematopoiesis in the adrenal gland is a rare physiologic compensatory event in many hematologic diseases.
For a general discussion on this subject, please refer to the main article on extramedullary hematopoiesis.
Epidemiology
Extramedullary hematopoiesis in the adrenal gland i...
Article
Duodenojejunal flexure
The duodenojejunal (DJ) flexure or junction is the anatomical border between the duodenum and the jejunum.
Gross anatomy
The duodenojejunal flexure is located anterolateral to the aorta at the level of the upper border of the second lumbar vertebra. It makes a sharp turn anteroinferiorly to be...
Article
Posterior ethmoidal artery
The posterior ethmoidal artery is a branch of the ophthalmic artery. It supplies the posterior ethmoidal sinuses, dura and nasal cavity. It passes through the posterior ethmoidal foramen to enter the anterior cranial fossa where it gives off meningeal and nasal branches.
Article
Segmental pancreatitis
Segmental pancreatitis is not a distinct entity in itself but describes an imaging differential.
Clinical presentation
With segmental pancreatitis, a patient presents with clinical pancreatitis (signs, symptoms, laboratory markers), but on imaging, only a portion of the gland appears to have c...
Article
ADIR position
The ADIR (ADduction and Internal Rotation) position relates to MR arthrography of the shoulder joint.
When added to a neutral-position shoulder protocol, MR arthrography in the ADIR position facilitates the diagnosis of labroligamentous lesions in patients with recurrent shoulder dislocations, ...
Article
Granulomatosis with polyangiitis (orbital manifestations)
Ophthalmologic manifestations of granulomatosis with polyangiitis (GPA) is not uncommon and can occur in either the classic or limited form of the disease.
For a general discussion of the condition, please refer to the main article on granulomatosis with polyangiitis (GPA). For other organ-spec...
Article
Osteofibrous dysplasia
Osteofibrous dysplasia is a benign fibro-osseous cortical lesion that occurs almost exclusively in the tibia and fibula. It is most commonly seen in the mid-diaphysis of the tibia. Some consider it synonymous with ossifying fibroma because of histological similarities, but it is generally consid...
Article
Bing-Neel syndrome
Bing-Neel syndrome is an extremely rare neurological complication of Waldenström macroglobulinemia where there is malignant lymphocyte infiltration into the central nervous system (CNS).
Epidemiology
The exact incidence is unknown, however, in one study of patients with Waldenström macroglobul...
Article
Adrenal cyst
Adrenal cysts are rare lesions that are usually found incidentally on imaging performed for other reasons.
Epidemiology
Adrenal cysts are reported to be rare with an incidence of <1% 1.
Clinical presentation
Patients can present with pain or swelling, although a significant portion (~40%) ...
Article
Mediastinum (ITMIG classification)
The International Thymic Malignancy Interest Group (ITMIG) classification of mediastinal compartments was developed to reflect a division of the mediastinum based on cross-sectional imaging. It was in part an effort to consolidate prior discrepant classification systems in use by different medic...
Article
Low phospholipid-associated cholelithiasis syndrome
Low phospholipid-associated cholelithiasis (LPAC) syndrome is one of the syndromes associated with ABCB4/MDR3 mutation. Characteristics of this syndrome include 1,2:
intrahepatic microlithiasis/sludge
symptomatic cholesterol stones with early onset (<40 years)
recurrent symptoms po...
Article
Broken heart sign
The broken heart sign, also known as the Y sign in older otorhinolaryngology literature 2,3, describes the appearances of incudomalleolar disarticulation.
This sign is identified on CT in the coronal plane, being formed by the widening of the incudomalleolar joint and lateral displacement of th...
Article
Windowing (CT)
Windowing, also known as grey-level mapping, contrast stretching, histogram modification or contrast enhancement is the process in which the CT image greyscale component of an image is manipulated via the CT numbers; doing this will change the appearance of the picture to highlight particular st...
Unable to process the form. Check for errors and try again.