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Well-defined breast cancers (differential)

Certain well-defined breast cancers tend to lack the characteristic spiculation and can give false reassurance of more benign entities on both ultrasound and mammography. These include: certain high grade invasive ductal carcinomas: not enough time for a desmoplastic reaction to form spiculatio...

Article

SADDAN syndrome

SADDAN syndrome is an acronym for severe achondroplasia with developmental delay and acanthosis nigricans. It is an extremely rare condition, and as the name states, comprises a combination of skeletal, brain and cutaneous anomalies. Pathology Genetics The syndrome results from a mutation in ...

Article

Hair

Hair (TA: pilus/pili) remains important physiologically and psychologically for humans. The hair shaft develops from a structure known as the hair follicle. Each hair has an arrector pili muscle and both sensory and sympathetic neural connections. Gross anatomy The hair shaft (TA: stipes pili)...

Case

Situs inversus totalis

Diagnosis certain

David Cuete

Published 10 Jan 2014

83% complete

CT

Case

Adenoid cystic carcinoma - submandibular gland

Diagnosis almost certain

Ammar Haouimi

Published 15 Sep 2021

77% complete

MRI

Article

Yttrium-90

Yttrium-90 (90Y) is a radioisotope derived from the decay of 90Sr. Yttrium-90 decays due to the emission of β- particles, with a half-life of 2.67 days 5. It has no gamma energy emission, but may be imaged through the use of bremsstrahlung interactions with planar or SPECT imaging. A small amou...

Article

Radionuclide shuntography

Radionuclide cisternography is a nuclear medicine imaging technique that uses 99mTc-DTPA (diethyletriaminepentaacetic acid; pentetate) injected into CSF shunt reservoirs to evaluate their patency. Imaging is performed at 2-6 hours after injection of the radiopharmaceutical into the shunt reserv...

Case

Calcified meningioma

Diagnosis certain

Bálint Botz

Published 18 Feb 2020

92% complete

CT

Article

Paratracheal air cyst

Paratracheal air cysts are not an uncommon incidental finding in routine thoracic imaging. They characteristically occur on the right side, in the region of the thoracic inlet. Occasionally they may mimic pneumomediastinum, so-called pseudopneumomediastinum. Terminology Paratracheal air cysts ...

Case