TY - JOUR T1 - Perianal basal cell carcinoma managed with wide excision and random flap reconstruction JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2022-250493 VL - 15 IS - 6 SP - e250493 AU - Michael Geoffrey Lee Lim AU - Marc Paul Jose Lopez AU - Jaime Antonio Ong Yu AU - Jose Paolo Pantua Albaño Y1 - 2022/06/01 UR - http://casereports.bmj.com/content/15/6/e250493.abstract N2 - Basal cell carcinoma (BCC) is a common skin malignancy and usually occurs in sun-exposed areas like the head and neck. Occurrence in the perianal area is rare, accounting for only 0.08% of all BCC, and 0.2% of anorectal malignancies.We present a case of a hypertensive woman in her 60s who had a 1-year history of a gradually enlarging mass on the left perianal region. Initial biopsy revealed a carcinoma with basaloid features and was confirmed on immunohistochemistry to be nodular BCC. Proctoscopy showed no intraluminal involvement. Contrast-enhanced chest and abdominal CT scans revealed no nodal or distant metastasis. MRI showed a 7.5 mm fat plane between the mass and the external sphincter muscles, projecting adequate surgical margins.A wide excision with at least 4 mm margins was performed. Reconstruction of the resulting defect was performed with a local random cutaneous flap. ER -