Case Report Two Basal Cell Carcinomas of the Axillae: A Metastasis or an Independent Development?

License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Cutaneous basal cell carcinoma (BCC) is a common malignancy amongst the elderly. BCC rarely metastasises, and fewer than 300 cases ofmetastatic BCC have been reported in the literature. Here, we report a case of sequentially developed BCCs located adjacent to each other. We discuss that these BCCs were considered to have developed independently rather than due to metastasis, after referencing previous studies on metastatic BCC. 1. Case Report An 80-year-old woman presented at our department with two tumours in the right axillary area. A medical interview revealed that the tumour located on the axillae appeared first. The patient reported that the tumour was sometimes accompanied by excoriation and serous discharge. Four years after the appearance of the first tumour, the second one developed on the right side of the chest and contacted the first tumour when the right shoulder joint was adducted (Figure