Skeletal muscle fibrosis

What it means

Excessive formation of fibrous bands of scar tissue in between muscle fibers.

Pathophysiologic fibrosis, which is essentially an excessive accumulation of extracellular matrix components, particularly collagen, is the end result of a cascade of events proceeding from tissue injury via inflammation, and resulting in permanent scar formation. Fibrosis can impair tissue function. In skeletal muscle, fibrosis is most often associated with the muscular dystrophies.

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Muscle biopsy: fibrosis