[Postoperative gastrointestinal bleeding in patients with pulmonary cancer].
D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000209:etiology; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D013276:Stomach Ulcer / Q000209:etiology