Article

Thenar hammer syndrome is a very rare condition that mimics rheumatic
diseases such as carpal syndrome tunnel, Raynaud's phenomenon, and hand
synovitis. OBJECTIVE: To describe the sonographic presentation of thenar hammer
syndrome in a typical patient.
Grey-scale sonography and colour Doppler
imaging of the hands with an iU22 scanner (Philips) were performed. RESULTS: In B
mode, the lesion was seen as a large, rounded, heterogeneous area combining
hypoechoic and echogenic components. Pseudoaneurysm was diagnosed based on
presence of a cystic saccular formation arising directly from the adjacent artery
and exhibiting an irregular thick wall with turbulent blood flow in the lumen.
Colour Doppler showed blood flow in part of the lumen, the rest of which was
filled with a thrombus seen as echogenic tissue. CONCLUSION: Sonography can help
to diagnose thenar hammer syndrome. Angiography may be unnecessary in patients
with normal colour Doppler findings.
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Langue : ANGLAIS