Merkel cell carcinoma (MCC) is an uncommon cutaneous neoplasm that mainly occurs solitarily in the head and neck region of the elderly.

• 摘要麦卡细胞瘤为一不常见之皮肤肿瘤，主要单发于老年人之头颈部，且易转移至肝，肺，骨头，脑等远处器官。