Endoscopic sampling for tissue diagnosis in gastrointestinal malignancy.
D000230:Adenocarcinoma / Q000175:diagnosis* / Q000473:pathology; D001706:Biopsy; D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000473:pathology; D003951:Diagnostic Errors; D004724:Endoscopy; D005336:Fiber Optic Technology; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005773:Gastroscopy; D006801:Humans