title: A rare case of collision tumor combined with multiple primary squamous carcinomas.
authors.forename: Jing Bo
authors.initials: JB
authors.lastname: Yang
authors.forename: Dong Ye
authors.initials: DY
authors.lastname: Yang
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology; D004938:Esophageal Neoplasms / Q000473:pathology; D051677:Histiocytoma, Malignant Fibrous / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology