Appendicitis

 

This acute or subacute (or in deed chronic) infection of the vermiform appendix is in most cases triggered off by blockage of its very small lumen by fecolith, tumor, worms or calculus, leading to stasis and bacterial overgrowth after ischemia. It involves an acute phase neutrophil exudate and congestion of subserosal vessels. Its chronic state may lead to abscess formation.

Appendicitis Normal appendix
 

 

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