Gastroscopy with biopsy and cytological sampling under direct vision.
D001466:Barium Sulfate; D001706:Biopsy; D002277:Carcinoma / Q000175:diagnosis; D003581:Cytodiagnosis; D005756:Gastritis / Q000175:diagnosis; D020699:Gastroscopes; D005773:Gastroscopy; D006396:Hematemesis / Q000175:diagnosis; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000473:pathology; D008551:Melena / Q000175:diagnosis; D008722:Methods; D011859:Radiography; D013272:Stomach Diseases / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000473:pathology; D013276:Stomach Ulcer / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology
D001466:Barium Sulfate