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venous lakeGeriatrics A dark blue-purple compressible papular vascular ectasia of older ♂ caused by dilation of venules, exacerbated by sun exposure Clinical Usually asymptomatic; pain, tenderness, excess bleeding may follow trauma DiffDx Melanoma, pigmented BCC
1. A small subcutaneous bleb filled with blood. It may be present on the lips, mouth, or ears.
2. A lateral pouch or diverticulum of the superior sagittal sinus of the brain into which protrude arachnoid villi that return cerebrospinal fluid to the venous circulation.
See also: lake