Perianal basal cell Carcinoma - An unusual site of occurrence

Abstract

Basal cell carcinoma is the most common nonmelanoma skin cancer. Its occurrence in the perianal region is very rare. Awareness of its benign behavior in this region, in contrast to the earlier reports, is vital in its management. Local excision seems to provide adequate control. We are herewith reporting an extremely rare case of a 69-year-old male with basal cell carcinoma treated adequately with local excision.

Adenoid type of basal cell carcinoma: Rare histopathological variant at an unusual location

“…[1] The role of solar exposure is well documented and contributes to its predilection for the head and neck region (around 75-86%). [23] Rest of the lesions appear on other areas and only 10% of all BCCs are located on the trunk. [4] There is paucity of literature on exact incidence of adenoid BCC but Bastiaens, et al .…”

“…These sites are breasts, periungual region,[6] palms, soles, glutei and intertriginous areas like axillae, groins, and genitals. [34] Niwa, et al . reported five cases of BCC at axillae, groins, foot and pinnae.…”

Nonmelanoma skin cancer in India: Current scenario

“…[ 65 ] Up to 80% of all lesions are found on the head and neck, whereas approximately 15% develop on the shoulders, back or chest. [ 66 ] There are isolated reports documenting involvement of the lower extremities,[ 67 ] the clitoris and the vulva,[ 68 ] perianal region,[ 69 ] etc. Rare instances of BCC developing in verrucous epidermal nevus,[ 70 ] and coexisting with multiple trichoepithelioma[ 71 ] have been reported from India.…”

A Hyperpigmented Perianal Nodule

“…Treatment options for perianal BCCs include wide local excision, electrodessication and curettage, and Mohs micrographic surgery [13,14]. The patient presented in this case was treated with wide local excision but had positive margins, requiring an additional excision.…”