【用戶】.

【年級】大三上

【評論內容】Basal cell carcinoma> Most common cancer in humans.>Caused by exposure to ultraviolet light; associated with PTCH gene mutation in many cases.>Incidence increasing in younger populations.>Locally destructive.>Treated by surgical excision, electrodesiccation and curettage, Mohs micrographic surgery, andoccasionally irradiation> PresentationThe presence of any friable, nonhealing lesion should raise the suspicion of skin cancer. Frequently, BCCis diagnosed in patients who state that the lesion bled briefly then healed completely, only to recur.BCC usually develops on sun-exposed areas of the head and neck but can occur anywhere on the body.Features include translucency, ulceration, telangiectasias, and the presence of a rolled border.Characteristics may vary for different clinical subtypes, which include nodular, superficial,morphea-form, and pigmented BCCs and fibroepithelioma of Pinkus (FEP). The anatomic location ofBCC may favor the development of a particular subtype.