“…However, MU can also occur in multiple other parts of the body, including the neck, elbow, scalp, calvarial bones, dura mater, brain, breast skin, nose and other sites (16)(17)(18)(19)(20)(21). The pathological types of MU include squamous cell carcinoma, basal cell carcinoma, malignant melanoma, sarcoma, squamous basal cell carcinoma, squamous cell melanoma and other neoplasms (10,22,23). Among these, squamous cell carcinoma is the most common pathological type of MU (10).…”