title: Percutaneous fine needle biopsy guided by barium examinations of the GI tract.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology; D000368:Aged; D001466:Barium Sulfate; D001707:Biopsy, Needle / Q000379:methods*; D002276:Carcinoid Tumor / Q000473:pathology; D003110:Colonic Neoplasms / Q000473:pathology; D004381:Duodenal Ulcer / Q000473:pathology; D005770:Gastrointestinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007078:Ileal Neoplasms / Q000473:pathology; D007890:Leiomyosarcoma / Q000473:pathology; D008297:Male; D010181:Pancreatic Cyst / Q000473:pathology; D011859:Radiography; D013274:Stomach Neoplasms / Q000473:pathology
chemical_list: D001466:Barium Sulfate