Pneumoperitoneum and parietography. Preliminary report.
D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging*; D011028:Pneumoperitoneum, Artificial; D011859:Radiography; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging*; D014054:Tomography