pannus

pannus /pan·nus/ (pan´us) [L.]

1. superficial vascularization of the cornea with infiltration of granulation tissue.

2. an inflammatory exudate overlying the synovial cells on the inside of a joint.

3. panniculus adiposus.

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pannus trachomato´sus  pannus of the cornea secondary to trachoma.

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pan·nus (pns)

n. pl. pan·ni (pn)

1. A membrane of granulation tissue covering the normal surface of the articular cartilages in rheumatoid arthritis.

2. A membrane of granulation tissue covering the normal surface of the cornea in trachoma.

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pannus

[pan′əs]

Etymology: L, cloth

an abnormal condition of the cornea, which becomes vascularized and infiltrated with granular tissue just beneath the surface. Pannus may develop in the inflammatory stage of trachoma or after a detached retina, glaucoma, iridocyclitis, or other degenerative eye disorder.

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pannus

1. superficial vascularization of the cornea with infiltration of granulation tissue.

2. an inflammatory exudate overlying synovial cells on the inside of a joint capsule, usually occurring in rheumatoid arthritis or related articular rheumatism.

3. panniculus adiposus.

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degenerative pannus

see chronic superficial keratitis.

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pannus 

Abnormal superficial vascularization of the cornea covering the upper half, or sometimes the entire cornea. It is characterized by a thick plexus of vessels. It is found in some cases of contact lens wear, mainly soft lenses. Pannus following contact lens wear is referred to as corneal vascularization. If induced by soft lenses, it can be reduced by changing to lenses of high oxygen transmissibility or ceasing contact lens wear. Deep corneal vascularization involving the stroma is usually the result of a disease process (e.g. interstitial keratitis, phlyctenular keratitis, severe long-standing trichiasis, trachoma).

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pannus

Rheumatology A reticulated membrane of granulation–reactive fibrovascular tissue typical of the chronic proliferodestructive phase of rheumatoid arthritis; immune complexes form at synovial membranes, evoking a nonspecific response, resulting in global destruction of chondroosseous tissue