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The prevalence of acral nevi increases directly with degree of skin pigmentation. In a study, palmar or plantar nevi were detected in 42.0% of black (50 of 119) vs 23.0% of whites (79 of 343). Palmar or plantar nevi of 6 mm diameter or larger were detected in 3.4% of blacks (4 of 119) vs 0.6% of whites. [2]
Nevi and melanomas are a group of neoplasia. Although a nevus and a melanoma are often treated as independent entities, there is evidence that a nevus can be a precursor for a melanoma. [1] Common mutations have been identified in nevi and melanomas. [2] [3] [4]
Dermatoscopy, also known as dermoscopy [1] or epiluminescence microscopy, is the examination of skin lesions with a dermatoscope. It is a tool similar to a camera to allow for inspection of skin lesions unobstructed by skin surface reflections.
Melanocytic tumors of uncertain malignant potential (MELTUMP) are melanocytic lesions in the dermis that cannot be classified by morphology as either benign naevi (moles) or malignant melanomas because the mass shows features of both.
Nevi are typically diagnosed clinically with the naked eye or using dermatoscopy. More advanced imaging tests are available for distinguishing melanocytic nevi from melanoma, including computerized dermoscopy and image analysis. [14] The management of nevi depends on the type of nevus and the degree of diagnostic uncertainty.
Zubritsky also drew the distinction between a subungual melanoma and a subungual hematoma, which is when blood pools under the nail after a trauma like getting a finger caught in a door or ...
Melanocytic nevi and neoplasms are caused by either a proliferation of (1) melanocytes, or (2) nevus cells, a form of melanocyte, but which lack dendritic processes. Contents Top
Spitz nevus is the medical name for a benign mole. They share a similar appearance with other moles, some that are cancerous. Learn more here. Skip to main content. 24/7 Help. For premium support ...