[Juvenile hyaline fibromatosis. Description of a case and review of the literature].

The authors report a typical case of JHF. The complete review of the literature shows that no more than 20 cases have been so far described. The clinical, pathological and electron microscopic features are stressed and the main clinical and pathological differential diagnoses are considered. The disease, formerly thought to be due to an abnormal composition of collagen fibers, seems to be nowadays, thanks to Japanese authors, related to an error in glycosaminoglycans metabolism.