productive peritonitis

pach·y·per·i·to·ni·tis

(pak'ē-per'i-tō-nī'tis),
Obsolete term for inflammation of the peritoneum with thickening of the membrane.
[pachy- + peritonitis]

productive peritonitis

Peritonitis with fibrosis; e.g., fibrous mesothelioma or fibrosing peritonitis.
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