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Subungual Congenital Nevus with Recurrent Nevus Phenomenon
Rami H El-Khayat1, Abid Rashid2, Maureen Y Walsh3
1Department of Dermatology, Royal Victoria Hospital, Belfast, UK.
Pediatric Dermatology
|July 8, 2015
Summary
Recurrence of subungual congenital nevi after complete excision is rare. This case highlights histopathologic recurrence presenting as congenital melanonychia, even after surgery.
Area of Science:
- Dermatology
- Pathology
- Oncology
Background:
- Melanonychia, a nail pigmentation, is uncommon.
- Subungual congenital nevi are rare pigmented lesions under the nail.
Observation:
- A case of congenital melanonychia was observed.
- The lesion was a subungual congenital nevus.
Findings:
- The subungual congenital nevus was completely excised.
- Histopathologic recurrence of the nevus was confirmed.
- Recurrence presented as melanonychia.
Implications:
- This is the first reported case of histopathologic recurrence of an excised subungual congenital nevus.
- Complete excision may not always prevent recurrence of subungual congenital nevi.
- Congenital melanonychia can be a sign of subungual nevus recurrence.
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