Bathing trunk nevus
Alternative Names
Congenital giant pigmented nevus; Giant hairy nevus
Symptoms
- Dark-colored lesion covering a large area of the middle body or arms and legs
- Brown to bluish black color
- May contain hair
Exams and Tests
All birthmarks should be evaluated by your health care provider. A biopsy of suspicious areas may be obtained for examination to determine if the cells have become cancerous. An MRI of the brain might be performed.