title: [A case of adenosquamous carcinoma at the esophagogastric junction, initially diagnosed as collision carcinoma].
abstract: A 47-year-old man was found to have a type 2 tumor of the esophagogastric junction on upper gastrointestinal endoscopy. Biopsy specimens revealed squamous cell carcinoma of the esophagus and adenocarcinoma of the stomach. The preoperative diagnosis was a collision carcinoma. No distant metastases were identified on computed tomography; therefore, partial esophagectomy and gastrectomy were performed. Pathological examination of the resected specimen revealed adenosquamous carcinoma at the esophagogastric junction (TNM classification: stage IIA, T3N0M0). Adenosquamous cell carcinoma of the esophagus and stomach is rare, but that at the esophagogastric junction even rarer.
authors.affiliation: Department of Gastroenterology, National Disaster Medical Center.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sasaki
authors.forename: Maiko
authors.initials: M
authors.lastname: Harada
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Kurosaki
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Shimada
authors.forename: Masatake
authors.initials: M
authors.lastname: Hayashi
authors.forename: Hideo
authors.initials: H
authors.lastname: Kamiichi
authors.forename: Norio
authors.initials: N
authors.lastname: Kawamura
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Kajiyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Yao
mesh_terms: D018196:Carcinoma, Adenosquamous / Q000188:drug therapy / Q000601:surgery; D017024:Chemotherapy, Adjuvant; D004938:Esophageal Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery; D004943:Esophagogastric Junction / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery