Cutaneous Schwannoma Presenting as a Pedunculated Mass: An Atypical Case

Schwannomas are common benign encapsulated tumours originating from peripheral nerve sheaths. The superficial cutaneous presentation of a schwannoma, particularly as a pedunculated mass, is exceedingly rare. This report aims to enhance clinical awareness and improve diagnostic accuracy by highlighting such an unusual presentation. A 32-year-old male presented with a solitary, asymptomatic, broad-based, pedunculated, firm, skin-coloured nodule on his right upper back. The lesion had been present for approximately 10 years and had been previously misdiagnosed as a keloid. Excisional shave biopsy revealed a well-encapsulated tumour in the upper dermis. Histopathological examination showed characteristic alternating hypercellular Antoni A areas and myxoid, hypocellular Antoni B areas. The diagnosis of schwannoma was established based on these histopathological findings. This report underscores the importance of broadening the clinical differential diagnosis for unusual pedunculated skin lesions to include schwannoma. Increased awareness of such atypical morphologies is essential for accurate diagnosis and appropriate patient management.