Group of diseases characterized by a benign proliferation of poorly differentiated mesenchymal cells and mature Collagen fibers. 

One distinguishes:

-         gingival fibromatosis:  fibrous and non-inflammatory proliferation of the gum; it is often part of syndromes and is then associated with hypertrichosis, mental retardation, epilepsy. To be distinguished from the gingival hyperplasia induced by some antiepileptic drugs

-         juvenile hyaline fibromatosis : see this topic

-         infantile myofibromatosis : see this topic

Updated: May 2019