Seven patients with tumor-like granulomatous lesions of the peritoneal cavity were cured, except one, by correct surgical intervention removing the inflammatory hyperplastic tissues and restoring the permeability of the alimentary tract. The exact diagnosis was suggested by the existence in the personal history of the patients of one or several interventions on the peritoneal cavity (6 of 7), and was confirmed by intraoperative, sometimes repeated, microscopic examination, rendering evident a fibrogenous giant cell granulomatous process; the presence of foreign bodies, especially suture threads or crystals (the latter characterized in polarized light) is very helpful for the diagnosis of these tumor-like inflammations.