title: Diagnostic difficulties in cardinoma of oesophagus.
mesh_terms: D000368:Aged; D001706:Biopsy; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004945:Esophagoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged