[Diagnostic value of pneumoperitoneum in perforation of ulcers of the stomach and duodenum].
D004386:Duodenum; D006801:Humans; D010437:Peptic Ulcer; D011027:Pneumoperitoneum; D014456:Ulcer
PEPTIC ULCER; PNEUMOPERITONEUM
K otsenke pnevmoperitoneuma v diagnostike perforatsii iazv zheludka i dvenadtsatiperstnoi kishki.