title: Adenoma accompanied by superficial squamous cell carcinoma of the esophagus.
abstract: BACKGROUND
  Adenoma of the esophagus is a rare type of esophageal submucosal tumor.
  
  
  METHODS
  An immunohistochemical and histopathologic study is reported of specimen from a patient with adenoma of the esophagus.
  
  
  RESULTS
  The eighth reported case of esophageal submucosal adenoma without Barrett epithelium is described. The patient was a 58-year-old man with an adenoma and carcinoma of the esophagus. The adenoma showed papillotubular structures lined with two layers of cuboidal cells within the submucosa and lamina muscularis mucosae, and the carcinoma was of the superficial squamous cell type confined to the submucosa.
  
  
  CONCLUSIONS
  Morphologic findings suggested that this adenoma had originated from the duct of the esophageal gland proper.
authors.affiliation: Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Takubo
authors.forename: Y
authors.initials: Y
authors.lastname: Esaki
authors.forename: A
authors.initials: A
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Umehara
authors.forename: K
authors.initials: K
authors.lastname: Sasajima
mesh_terms: D000236:Adenoma / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D004938:Esophageal Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged