title: Collision of malignant neoplasms of the skin: basosquamous cell carcinoma associated with melanoma.
abstract: Collision tumors are characterized by the coexistence of two cancers in the same anatomical site and its pathogenesis remains controversial. Although uncommon, the association of basal cell carcinoma and melanocytic nevus is the most common among combinations of skin tumors. Even rarer is the association of two malignant tumors. We report a case of tumor collision representing melanoma and basosquamous cell carcinoma, a combination not previously described in the literature, since there are no reported cases of melanoma with this type of basal cell carcinoma.
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Paula Mota
authors: PM
authors: Medeiros
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Natália Ribeiro de Magalhães
authors: NR
authors: Alves
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Cássia Camarinha da
authors: CC
authors: Silva
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Paula Carolina Pessanha de
authors: PC
authors: Faria
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Carlos Baptista
authors: CB
authors: Barcaui
authors: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR.
authors: Juan
authors: J
authors: Piñeiro-Maceira
mesh_terms: D002281:Carcinoma, Basosquamous / Q000473:pathology* / Q000601:surgery; D046169:Dermoscopy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome