Pannus
Abnormal layer of tissue / From Wikipedia, the free encyclopedia
For the eye disease in dogs, see Chronic superficial keratitis. For the cloud variety, see Scud (cloud).
Not to be confused with Panniculus.
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.[1] Pannus may grow in a tumor-like fashion, as in joints where it may erode articular cartilage and bone.
In common usage, the term pannus is often used to refer to a panniculus (a hanging flap of tissue).