When esophageal carcinoma is obscured by other factors.
D000231:Adenocarcinoma, Papillary / Q000175:diagnosis / Q000473:pathology; D000367:Age Factors; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology; D003680:Deglutition Disorders / Q000209:etiology*; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors