pannus

noun
pan·​nus | \ ˈpan-əs How to pronounce pannus (audio) \
plural panni\ ˈpan-​ˌī How to pronounce panni (audio) \

Medical Definition of pannus

1 : a vascular tissue causing a superficial opacity of the cornea and occurring especially in trachoma
2 : a sheet of inflammatory granulation tissue that spreads from the synovial membrane and invades the joint in rheumatoid arthritis ultimately leading to fibrous ankylosis

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