Appendicular mucocele and peritoneal pseudo-myxoma.

From 2 personal cases the authors present a pathological appraisal of appendicular mucoceles. They distinguish between a benign kind with an atrophic mucous membrane and a malignant type with a hyperplasic epithelium arranged in papillary and vegetating structures; this is a neoplasm with local malignancy. This variety remains the most liable to become a peritoneal pseudo-myxoma representing the most serious complication of the appendicular mucecele. Treatment of the mucocele, which consists in an appenicectomy or a right bemi-colectomy, usually yields good results provided operative rupture can be avoided. Contrarily the peritoneal pseudo-myxoma remains a serious disease with a disappointing treatment.