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pseudomyxoma peritonei

(pĕr′ĭ-tn-ēī)
n.
  1. The accumulation of mucoid or mucinous material in the peritoneal cavity, either as a result of rupture of a mucocele of the appendix or of rupture of a benign or malignant cystic neoplasm of the ovary.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.