Peritoneoscopy.
D000008:Abdominal Neoplasms / Q000175:diagnosis; D000328:Adult; D000368:Aged; D005336:Fiber Optic Technology; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects; D008107:Liver Diseases / Q000175:diagnosis; D008722:Methods; D008875:Middle Aged