title: Collision tumor of the stomach: an unusual combination of adenocarcinoma and immature "neuroepitheliomatous" teratoma.
abstract: A 54-year-old woman was diagnosed with an asymptomatic gastric tumor during routine radiological investigation for staging of breast carcinoma. Subsequent endoscopic biopsy confirmed a poorly differentiated adenocarcinoma. Surgical resection of the stomach showed a tumor with 2 distinct components: a superficial lymphoepithelioma-like adenocarcinoma and a deeper submucosal component consistent with immature teratoma. There was lymph node metastasis. The patient is well without any evidence of disease 18 months post surgery.
authors.affiliation: University of Oxford, Oxford Radcliffe Hospitals, Oxford, UK.
authors.forename: Dhirendra
authors.initials: D
authors.lastname: Govender
authors.forename: Stefano
authors.initials: S
authors.lastname: Serra
authors.forename: Runjan
authors.initials: R
authors.lastname: Chetty
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism / Q000556:secondary* / Q000601:surgery; D014408:Biomarkers, Tumor / Q000378:metabolism; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D033162:Incidental Findings; D008198:Lymph Nodes / Q000378:metabolism / Q000473:pathology; D008207:Lymphatic Metastasis; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D013274:Stomach Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000378:metabolism / Q000556:secondary* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor