Hobbs MM, Geers TE, Brown TS, Malone JC, et al. Triple Collision Tumor Comprising Merkel Cell Carcinoma with an Unusual Immunophenotype, Squamous Cell Carcinoma In-Situ, and Basal Cell Carcinoma. J Cutan Pathol 2020 Apr 3. doi: 10.1111/cup.13698.
PMID: 32243639