[Biopsy and cytodiagnosis of cancer of the esophagus, stomach and duodenum].
D000368:Aged; D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000473:pathology; D003581:Cytodiagnosis; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004945:Esophagoscopy; D005260:Female; D005336:Fiber Optic Technology; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology