| dissection tubercle | Dorsal tubercle of radius, a small prominence on the dorsal aspect of the distal end of the radius lateral to the groove for the extensor pollicis longus tendon; it serves as a trochlea or pulley for the tendon. Synonym: tuberculum dorsale, Lister's tubercle. (05 Mar 2000) |
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| intramural oesophageal dissection | <radiology> Submucosal dissecting haematoma, haematemesis, chest pain, double-barreled lumen, Treatment: none (supportive) see: oesophageal trauma (12 Dec 1998) |