An inflammation of the endopleura, the inner membrane of a shell or exoskeleton.
From endopleura + -ite (suffix denoting inflammation or disease). Follows the medical naming convention of -itis replaced by -ite in certain contexts.
While endopleurite sounds like it should be a common shellfish disease, it's actually quite rare in medical literature—most invertebrate infections damage the shell itself rather than specifically inflaming the inner membrane.
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