title: Pseudosarcoma of the esophagus.
abstract: A 64-year-old man with pseudosarcoma of the esophagus is described. Morphologic examinations of this rare tumor were made, and the origin of the sarcoma-like cells of the tumor is discussed. The findings for the sarcoma-like cells of the tumor support the idea that the sarcoma-like elements arose through transformation of epithelial cells. The patient was unable to undergo surgical treatment and died of a generalized fungal infection.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology; D003896:Desmosomes / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D004938:Esophageal Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D005350:Fibroma / Q000209:etiology / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology; D012907:Smoking