What is "pannus"

Pannus \Pan"nus\, n. [L., cloth. See 2d Pane.] (Med.) A very vascular superficial opacity of the cornea, usually caused by granulation of the eyelids.
--Foster.

n. 1 a hanging flap of skin or other tissue, especially one covering the cornea (in trachoma) or cartilage (in rheumatoid arthritis) 2 (context meteorology English) a type of accessory cloud, looking like shreds either attached to, or separated from, the main cloud formation. Mainly associated with nimbostratus, cumulus, and cumulonimbus.

Pannus is an abnormal layer of fibrovascular tissue or granulation tissue. Common sites for pannus formation include over the cornea, over a joint surface (as seen in rheumatoid arthritis), or on a prosthetic heart valve. Pannus may grow in a tumor-like fashion, as in joints where it may erode articular cartilage and bone.

The term Pannus adiposus may be used as synonyms of panniculus, a layer of subcutaneous fat tissue underlying the corium..