pannus


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Related to pannus: corneal pannus, abdominal pannus

pannus

 [pan´us]
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.
Schematic presentation of the pathologic changes in rheumatoid arthritis. The inflammation (synovitis) leads to pannus formation, obliteration of the articular space. From Damjanov, 2000.

pan·nus

, pl.

pan·ni

(pan'ŭs, pan'ī), A membrane of granulation tissue covering a normal surface:
1. The inflammatory synovial tissue found in rheumatoid joints that covers the articular cartilages that progressively destroys the underlying articular cartilages; also found in other chronic granulomatous disease, including tuberculosis.
See also: corneal pannus.
2. The cornea in trachoma.
See also: corneal pannus.
[L. cloth]

pannus

A reticulated membrane of granulation (reactive fibrovascular) tissue, which is typical of the chronic proliferodestructive phase of rheumatoid arthritis; immune complexes form at synovial membranes, evoking a nonspecific immune response by macrophages, resulting in global destruction of chondroosseous tissue.

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

pan·nus

, pl. panni (pan'ŭs, -ī)
1. A membrane of granulation tissue covering a normal surface.
2. The articular cartilages in rheumatoid arthritis and in chronic granulomatous diseases such as tuberculosis.
3. The cornea in trachoma.
See also: corneal pannus
[L. cloth]

pannus

A membrane of fine blood vessels and fibrous tissue that spreads down over the cornea in TRACHOMA and other inflammatory corneal disorders causing loss of vision. A similar membrane can affect the inner linings of joints.

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).
References in periodicals archive ?
En nuestro caso el uso del neuronavegador permitio un procedimiento seguro y remocion completa del pannus inflamatorio y odontoides.
Lee, "Spontaneous regression of periodontoid pannus mass in psoriatic atlantoaxial subluxation case report," The Spine Journal, vol.
In histopathological analysis, A1 and CC3 VNAR-Fc reduced cartilage destruction, bone erosion, pannus formation, and granulocyte infiltration, to the same extent as HK5.3 (Figure 6(d)).
An immunohistochemical and immunoelectron microscopic study of adhesion molecules in synovial pannus formation in rheumatoid arthritis.
[11] Bir saat suren sabah tutuklugu, destruktif poliartrit ve MRG ile omuzda tespit edilen pannus formasyonu varligi, olgumuzda oncelikle RA tanisini dusundurse de RA tedavisine ragmen artritin kontrol altina alinamamasi, ileri yasta, ani baslayan, asimetrik oligoartikuler tutulum ve RF, anti CCP antikor negatifligi paraneoplastik artritlerin genel ozellikleriyle uyumluydu.
Caption: Figure 5: (a) Right eye slit lamp photo showing a large corneal infiltrate with a peripheral corneal perforation and pannus. (b) Left eye slit lamp photo showing peripheral ulcerative keratitis with scarring and pannus.
Villi formation and intra-articular pannus formation develop as the amount of synovial fluid increases, leading to the proliferation of synovial tissue.
This host-synthesized neointimal lining remained thin, avoiding excessive hyperproliferative deposition or pannus formation.
This was due to the pannus of the obese patient shifting disproportionately the umbilicus.
With the development of RA, it characteristically affects the small joints of the hands and feet resulting in a gradual painful swelling, exaggerated, and abnormal development of the synovium, pannus formation, and changes in the morphology of the joint [6].
An analysis of the UV transmission for cloud types and cloud fraction made over two years by Kuchinke and Nunez (1999) has shown the median attenuation of biologically effective UV approaches 70% under overcast conditions for an SZA range of 35[degrees]-59[degrees], reaching up to 84% attenuation during periods of total cover by rain-bearing pannus cloud.
reported that FDG accumulation reflects the characteristic changes of pathological progression, such as pannus formation and bone destruction.