Basal cell carcinoma(BCC) is a common skin cancer arising from the basal layer of epidermis and its appendages. BCC is more common in elderly individuals but is becoming increasingly frequent in people younger than 50 years of age. Although the associ...
Basal cell carcinoma(BCC) is a common skin cancer arising from the basal layer of epidermis and its appendages. BCC is more common in elderly individuals but is becoming increasingly frequent in people younger than 50 years of age. Although the association of BCC with sun exposure is well known, it can arise on areas unexposed to sunlight such as perianal, groin and genital region. BCC in the groin can recur following simple excision, and metastases have been reported. A 26-year-old man presented with asymptomatic brownish mass over the left side of groin for the last 2 year. Two years ago, the lesion was removed with a CO<sub>2</sub> laser, but recurred at the same site. Patient denied history of immunosuppression, exposure to radiation or arsenic and family history of skin cancers. Excisional biopsy revealed basal cell carcinoma. There was no evidence of enlarged lymph nodes or metastasis on abdomen and pelvis CT which performed for staging work up. After excision, the lesion was completely removed and there was no evidence of malignancy in a biopsy performed one year later. Nodular lesions in the unexposed area are easy to overlook the possibility of BCC, especially in young patients. So we report an unusual case of BCC which occurred in unexposed area and clinicians should be aware of possibility of BCC.