Syringocystadenoma papilliferum of the scalp arising from a nevus sebaceous

Abstract

Syringocystadenoma papilliferum (SCAP) is a rare, benign tumour with varied presentations that arises from the apocrine glands and at times can lead to a diagnostic dilemma. A 53-year-old male presented with a 40-year history of a scalp nodule and a recent 2-year change in its character, and a sanguinopurulent discharge. Examination revealed a 4 cm × 2 cm firm nodule upon left side of the scalp vertex, actively discharging pus and blood. No regional lymph nodes were noticeably palpable. Incision biopsy performed elsewhere showed evidence of a squamous cell carcinoma-in-situ. He underwent a wide local excision with a bilobed flap reconstruction. Histopathologically, the lesion was reported to be SCAP. On follow-up, the patient has since remained asymptomatic with an acceptable cosmetic recovery.

Syringocystadenoma Papilliferum of the Scalp Mimicking Squamous Cell Carcinoma

“…A linear type usually manifests with multiple papules of similar size, with a dimple, often being misdiagnosed as molluscum contagiosum (MC). The last, a solitary nodule, usually presents on the trunk, perhaps on the genitalia, shoulders, or axillae [5]. One-third of SCAP cases are associated with a nevus sebaceous, as was found in our case.…”

Neonatal syringocystadenoma papilliferum: A case report

“…Most SCAP occur in the head and neck region, and unusual locations comprise the buttock, vulva and scrotum, pinna, eyelid, outer ear canal, postoperative scar, scalp, nipple, thigh, axilla, and back[ 3 ]. Several reports have described cases with SCAP originating from the nevus sebaceous in older women[ 5 - 7 ]. However, no previous clinical report described a case similar to the present one.…”