Encyclopedia of imaging and clinical diagnosis.
Structured, referenced entries on 21 conditions, signs and techniques — each linked to real cases you can scroll through.
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Sigmoid volvulus
Colonic volvulus, Coffee bean sign
Twisting of a redundant sigmoid colon around its mesentery, causing a closed-loop large bowel obstruction.
Silhouette sign
Loss of silhouette
Loss of a normal border between soft tissue and air when an adjacent structure fills with fluid or tissue, used to localise chest disease.
Small bowel obstruction
SBO, Mechanical small bowel obstruction
Mechanical blockage of the small intestine, most often from adhesions or hernias, producing dilated fluid-filled loops proximal to a transition point.
Subarachnoid hemorrhage
SAH, Subarachnoid haemorrhage
Bleeding into the subarachnoid space, most often from trauma or, in spontaneous cases, a ruptured intracranial aneurysm.