Atypical pigmented basal cell carcinoma mimicking traumatic pigmented tattoo = Atypical pigmented basal cell carcinoma mimicking traumatic pigmented tattoo

다국어 초록 (Multilingual Abstract)

Basal Cell Carcinoma, the most common type of skin cancer in humans, usually develops in the sun-exposed area of head and neck. A 63-year-old woman presented with 1-year history of a bean-sized, slightly protruded bluish dermal patch in her right para-nasal area, and it gradually increased in size after she perceived its presence. It looked like traumatic pigmented tattoo because of bluish color and flat patchy features. A punch biopsy was performed, and the lesion was diagnosed as a basal cell carcinoma (BCC). Histopathologically, melanophages were seen scattered between typical basaloid BCC tumor nests in the reticular dermis, making the lesion appear similar to a traumatic pigmented tattoo by Tyndall effect. Typically pigmented BCC appears as a hyperpigmented, translucenet papule which may also have eroded borders. The patient only showed bluish colored patch without eroded borders, making it appear clinically similar to a pigmented tattoo. Herein, we report an interesting case of pigmented BCC which mimicked traumatic pigmented tattoo but was confirmed to be a BCC by biopsy.