title: Collision tumor of the mediastinum: a rare entity.
abstract: A collision tumor is a rare entity consisting of 2 different tumors that, because of proximity, merge together. The diagnosis of a collision tumor requires that the 2 tumors be histologically distinct. This phenomenon has been described mostly at the esophagogastric junction, where a squamous cell carcinoma of esophageal origin collides with a gastric adenocarcinoma. The present case is of 2 histologically distinct tumors with aggressive features occurring at the mediastinum.
authors.affiliation: Division of Oncology, Rambam Health Care Campus & Technion-Israel Institute of Technology, Haifa, Israel.
authors.forename: Orit
authors.initials: O
authors.lastname: Kaidar-Person
authors.forename: Inna
authors.initials: I
authors.lastname: Naroditsky
authors.forename: Ludmila
authors.initials: L
authors.lastname: Guralnik
authors.forename: Ran
authors.initials: R
authors.lastname: Kremer
authors.forename: Gil
authors.initials: G
authors.lastname: Bar-Sela
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000473:pathology* / Q000601:surgery; D016629:Esophagectomy; D004943:Esophagogastric Junction / Q000473:pathology*; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009378:Neoplasms, Multiple Primary; D013274:Stomach Neoplasms / Q000473:pathology* / Q000601:surgery