title: True carcinosarcoma of the esophagus.
abstract: Most esophageal carcinosarcomas are diagnosed as so-called carcinosarcoma, in which individual elements may be derived from a single common ancestor cell, and there have been a few reports describing true carcinosarcoma originating from two individual stem cells. We describe a case of esophageal carcinosarcoma exhibiting neoplastic osteoid formation. Immunoreactivity for vimentin and p53 was limited to only the sarcomatous component and was absent in the carcinomatous component. Furthermore, a point mutation in exon 7 of the p53 gene was observed only in the sarcomatous component. Both sarcoma and carcinoma cells distinctively metastasized to different lymph nodes. These observations led us to diagnose the esophageal tumor as a true carcinosarcoma.
authors.affiliation: Department of Surgery I, Iwate Medical University School of Medicine, Morioka, Japan. tiwaya@iwate-med.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Iwaya
authors.forename: C
authors.initials: C
authors.lastname: Maesawa
authors.forename: N
authors.initials: N
authors.lastname: Uesugi
authors.forename: T
authors.initials: T
authors.lastname: Kimura
authors.forename: S
authors.initials: S
authors.lastname: Ogasawara
authors.forename: K
authors.initials: K
authors.lastname: Ikeda
authors.forename: Y
authors.initials: Y
authors.lastname: Kimura
authors.forename: S
authors.initials: S
authors.lastname: Mitomo
authors.forename: K
authors.initials: K
authors.lastname: Ishida
authors.forename: N
authors.initials: N
authors.lastname: Sato
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: T
authors.initials: T
authors.lastname: Masuda
mesh_terms: D002296:Carcinosarcoma / Q000235:genetics* / Q000473:pathology* / Q000601:surgery; D004273:DNA, Neoplasm / Q000235:genetics; D004938:Esophageal Neoplasms / Q000235:genetics* / Q000473:pathology* / Q000601:surgery; D017809:Fatal Outcome; D016158:Genes, p53 / Q000235:genetics; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000532:radiotherapy; D017354:Point Mutation
chemical_list: D004273:DNA, Neoplasm