There is a significant association between bathing trunk nevus and neurofibromatosis. However, not all neurofibroma-like papules detected clinically in cases with bathing trunk nevus may be a neurofibromas and histopathological confirmation is essential for definition of these lesions. We report a 21 year old white male patient with a bathing trunk nevus studded with neurofibroma-like papules of melanocytic nature. Histopathological examination of both papular and flat lesions showed diffuse melanocytes with plentiful eosinophilic cytoplasm and round nuclei in the dermis. Immunohistochemistry showed strong positivity of dermal melanocytes for S-100 protein. The clinical and histopathological findings and positivity of dermal melanocytes for S-100 protein were consistent with bathing trunk melanocytic nevus.
aMedical Faculty of Kahramanmaras Sutcuimam University, Department of Dermatology, Kahramanmaras, Turkey
bOrtaca State Hospital, Clinic of Urology, Mugla, Turkey
cHarun Ciralik MD, Medical Faculty of Kahramanmaras Sutcuimam University, Department of Pathology, Kahramanmaras, Turkey
dMedical Faculty of Kahramanmaras Sutcuimam University Department of Anatomy, Kahramanmaras, Turkey
Correspondence and requests for reprints to Dr. Sezai Sasmaz, Kahramanmaras Sutcuimam Universitesi, Tip Fakultesi Dermatoloji Anabilim Dali, 46050 Kahramanmaras, Turkey
Tel: +90 344 221 23 37; fax: +90 344 221 23 71;
Received 6 July 2004 Accepted 27 October 2004