title: Fibrodysplasia ossificans progressiva (FOP).
abstract: Fibrodysplasia ossificans progressiva (FOP) is a rare deforming disease, affecting the skeleton and is associated with progressive endochondral ossification of the striated muscles. Swelling of the soft parts is rare and can be the initial manifestation. We report three patients where initial swelling preceded the ossification.
authors.affiliation: Pediatric Rheumatology Unit of the Childrens Institution, Hospital das Clinicas, University of Sao Paulo, Brazil.
authors.forename: Luciana Brandão
authors.initials: LB
authors.lastname: Paim
authors.forename: Bernadete de Lourdes
authors.initials: Bde L
authors.lastname: Liphaus
authors.forename: Clovis Artur
authors.initials: CA
authors.lastname: Almeida da Silva
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009221:Myositis Ossificans / Q000175:diagnosis / Q000473:pathology