Janeway lesion
| Janeway lesion | |
|---|---|
| File:Janeway lesion.JPG | |
| Classification and external resources | |
| Specialty | Lua error in Module:Wikidata at line 446: attempt to index field 'wikibase' (a nil value). |
| ICD-10 | A41.8 (ILDS A41.820) |
| Patient UK | Janeway lesion |
Janeway lesions are non-tender, small erythematous or haemorrhagic macular or nodular lesions on the palms or soles only a few millimeters in diameter that are indicative of infective endocarditis.[1] Pathologically, the lesion is described to be a microabscess of the dermis with marked necrosis and inflammatory infiltrate not involving the epidermis.[1] They are caused by septic emboli which deposit bacteria, forming microabscesses.[2] Janeway lesions are distal, flat, ecchymotic, and painless.
Osler's nodes and Janeway lesions are similar, but Osler's nodes present with tenderness and are of immunologic origin.[3]
Eponym
They are named after Edward Janeway (1841-1911), a prominent American physician and pathologist who initially described the lesions.
