What is a bathing trunk nevus?

Congenital Nevus: A bathing trunk nevus is a common term used to describe a giant congenital nevus. These large moles or birthmarks are present at birth and can cover the entire trunk (like a one piece bathing suit). There is in increased chance of developing melanoma in these lesions compared to smaller moles. These children should be evaluated by a dermatologist.

Nevus : A bathing suit or trunk nevus is large , congenital birth mark. It is a pigmented (dark brown /black) mole located typically on the lower portion of the body where a "bathing suit " would cover . In some cases malignant melanoma can develop so the area should be closely followed by a dermatologist and patient alike