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Bathing Trunk Nevus
Alternate Names : Congenital Giant Pigmented Nevus, Giant Hairy Nevus
Definition A bathing trunk nevus is a congenital (present from before birth), disfiguring, darkly pigmented, often hairy patch of skin (nevus), which may cover an extremely large area of the body. Sometimes the nevus covers most of the trunk, the upper arms, and thighs.
Pictures & Images
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Overview, Causes, & Risk Factors
Bathing trunk nevi are thought to be caused by spontaneous mutations or other events during fetal development, but in some families, the frequent appearance of these lesions suggests that they may be genetically inherited. They may be associated with other birth defects.
The surface texture may vary from smooth to warty, and the color varies from brown to bluish black. Bathing trunk nevi may cause emotional problems because of their appearance.
They can also be dangerous. The nevus has a high risk of developing into melanoma (a type of skin cancer). The risk is thought to be between 3% and 7%.
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Jump to another section
• Definition
• Bathing Trunk Nevus Overview, Causes, & Risk Factors
• Bathing Trunk Nevus Symptoms & Signs
• Bathing Trunk Nevus Diagnosis & Tests
• Bathing Trunk Nevus Treatment
• Bathing Trunk Nevus Prognosis
• Bathing Trunk Nevus Complications
• Calling Your Health Care Provider
• Pictures & Images
Topics that might be of interest to you Diseases & Conditions
• Birthmarks - Pigmented
• Cancer
• Hydrocephalus
• Skin Cancer
Tests & Exams
• Biopsy
• MRI of the Head
Other Topics
• Seizures
Review Date : 12/27/2002
Reviewed By : Hebe Molmenti, M.D., Ph.D., Private Practice specializing in Plastic and Reconstructive Surgery, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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