Nodes, Osler’s
A diagnostic sign of bacterial infection of the heart (subacute bacterial endocarditis). These are small (the size of split peas), tender, transient nodules in the pads of fingers and toes and the palms and soles. Named for the Canadian-born physician Sir William Osler (1849-1919).
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- Nodular hyperplasia of the prostate
Benign prostatic hyperplasia.
- Nodular melanoma
One of the four clinical types of malignant melanoma, which typically presents as a raised, distinct, bluish-black tumor that may be encircled by particularly pale skin, most often in middle-aged or older adults.
- Nodule
A small collection of tissue that is palpable (can be felt) at any level of the skin (in the epidermis, dermis, or subcutis) or in another tissue of the body. Nodules characteristically range in size from 1 to 2 cm in diameter.
- Nodule, Heberden
A small hard fixed bump on the finger, usually at the last joint of the finger. A Heberden nodule is a calcified spur of the joint (articular) cartilage. It serves as a useful sign of osteoarthritis. Named for the English physician William Heberden (1710-1801) who made a number of celebrated medical discoveries (including angina).
- Noisome
Offensive to the senses and especially disgusting, offensive, or harmful to the sense of smell. For example, the smell of a chemical such as formaldehyde can be noisome. “Noisome” comes from the Middle English “noy” meaning “annoyance,” and “enui” which in French also means “annoyance.”