The use of peritoneoscopy in the detection of liver metastases

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Abstract
Peritoneoscopy was carried out in 352 cancer patients with clinical suspicion of liver involvement in most cases. Principally because of patient discomfort, adequate liver biopsy was obtained in only 66% of 240 patients who underwent peritoneoscopy under local anesthesia while, under general anesthesia, biopsies could be taken in 90% of 112 patients. When the liver was macroscop-ically free of disease, the yield of positive peritoneoscopy was minimal regardless of the number of blind deep biopsies. Peritoneoscopy provided histologic demonstration of hepatic invasion in a total of 55 patients. Seven false-negative examinations out of 19 negative peritoneoscopies (36%) were identified by subsequent laparotomy or autopsy within 2 months. These preliminary data, although difficult to interpret in terms of accuracy of the method, point to the possible contributions of peritoneoscopy in detecting liver metastases.