MILD EXPRESSION OF FIBRODYSPLASIA OSSIFICANS PROGRESSIVA - A REPORT OF 3 CASES

We describe 3 unusually mild cases of fibrodysplasia ossificans progre ssiva (FOP) in an 80-year-old man, a 44-year-old woman, and a 17-year- old woman. The man, whose daughter had classic features of FOP, lacked malformation of the great toes and experienced unusually slow progres sion of the disease. Both women displayed late onset heterotopic ossif ication, The older woman displayed an unusually slow progression of th e disease. All 3 patients remained ambulatory at the time of examinati on. Recognition of a mild form of FOP will influence diagnosis, counse lling, and research in this rare condition.