Osler's node

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File:Osler Nodules Hand.jpg
Osler's lesions found on the hand and fingers of a 43 year old male with subacute bacterial endocarditis.

Osler's nodes are painful, red, raised lesions found on the hands and feet. They are associated with a number of conditions, including infective endocarditis, and are caused by immune complex deposition. They are named after Sir William Osler who described them in the early 20th century.[1][2] Their presence is one definition of Osler's sign.[3]


Osler's nodes result from the deposition of immune complexes.[citation needed] The resulting inflammatory response leads to swelling, redness, and pain that characterize these lesions.

The nodes are commonly indicative of subacute bacterial endocarditis.[4] 10–25% of endocarditis patients will have Osler's nodes.[citation needed] Other signs of endocarditis include Roth's spots and Janeway lesions. The latter, which also occur on the palms and soles, can be differentiated from Osler's nodes because they are nontender.[5]

It can also be seen in

External links


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hr:Oslerov čvor no:Oslers knute

pl:Guzek Oslera
  1. synd/1702 at Who Named It?
  2. W. Osler. Chronic infectious endocarditis. Quarterly Journal of Medicine, Oxford, 1908-1909, 2: 219-230.
  3. Osler sign at Dorland's Medical Dictionary
  4. Osler nodes at Dorland's Medical Dictionary
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