Case report
Open access
Sep 2026
A rare collision tumour of basal cell carcinoma and malignant melanoma of the lower abdomen with distant metastases: a case report
Abstract Collision tumours are uncommon lesions in which two histologically distinct neoplasms coexist at one anatomical site, creating diagnostic difficulty when one component predominates clinically or histologically. A 70-year-old man presented with a large exophytic pigmented tumour on the lower abdomen that had be...
Shota Murakami, Masato Tsuchiya, Mieko Uno et al.
· Case Reports in Plastic Surg... · 0 citations