"Primary cutaneous biphasic sarcomatoid basal cell carcinoma with myoepithelial carcinoma differentiation": Is it a new variant of sarcomatoid basal cell carcinoma or a collision tumor composed of a myoepithelial carcinoma and an incidental basal cell carcinoma?

Cell carcinoma? Keywords: basal cell carcinoma; collision; myoepithelial carcinoma; sarcomatoid; tumor EN basal cell carcinoma collision myoepithelial carcinoma sarcomatoid tumor 576 578 3 05/21/20 20200601 NES 200601 ABSTRACT The tumor designated as "primary biphasic sarcomatoid basal cell carcinoma with myoepithelial differentiation" does not truly represent a new variant of sarcomatoid basal cell carcinoma but rather a collision tumor composed of a myoepithelial carcinoma and an incidental basal cell carcinoma and should therefore be classified appropriately. In summary, the tumor designated as "primary biphasic sarcomatoid basal cell carcinoma with myoepithelial differentiation" does not truly represent a new variant of sarcomatoid BCC but rather a collision tumor composed of a myoepithelial carcinoma and a BCC and should therefore be classified appropriately. [Extracted from the article]