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Giant hairy ‘Bathing trunk’ nevus with multiple satellite nevi & lipomatosis
+For correspondence: thakur_sk@rediffmail.com
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article was originally published by Medknow Publications & Media Pvt Ltd and was migrated to Scientific Scholar after the change of Publisher.
A 20 year old unmarried girl presented to Surgery OPD, Saraswathi Institute of Medical Sciences, Hapur, north India, in June 2012, with complaints of multiple black patches all over the body since birth. As she grew older multiple swellings appeared on the patches. The patches and swellings had increased in size gradually with age in proportion to body growth. There was a family history of similar lesions in a paternal uncle and her grandfather. She was worried about the large swelling in the left flank. Examination revealed a large bluish black, well defined patch, covering most of the back with lesional hypertrichosis. Multiple satellite lesions of similar morphology were noted. There were multiple swellings of different sizes and shapes on this giant nevus (Fig. 1). All were mobile, soft in consistency with well defined margins. The largest swelling on the left flank measured 10 × 6 cm. A clinical diagnosis of congenital ‘Bathing trunk’ nevus with multiple satellite nevi and lipomatosis was made. ‘Bathing trunk’ nevus is a special type of congenital giant nevus, in the shape of the named garment. A congenital melanocytic nevus is labelled as giant if it involves more than 144 cm2 area of body or measures more than 20 cm in diameter in an adult. Bathing trunk nevus is a rare clinical entity and one, in combination with multiple nevi and lipomas, is rarer. Fine needle aspiration cytology (FNAC) of swellings confirmed the clinical suspicion of lipoma. The swelling of the flank was surgically excised. On histopathological examination, the nevus was found to be of the intradermal category with no junctional activity or sign of malignancy. In consultation with a plastic surgeon, adequate expansion of normal skin with tissue expander followed by removal of nevus and resurfacing with expanded skin has been planned for the patchy, hairy and deep black colour moles on the face (Fig. 2). No further treatment was offered, but keeping in mind the potential risk of melanoma developing in this type of lesion, the patient is being followed regularly after the surgery at the interval of one month at present.
- ‘Bathing trunk nevus’ with multiple swellings of different sizes and shapes.
- Two big patchy deep black moles on the face with lesional hypertrichosis.
