Multiple soft tissue calcifications with toe deformities (Fibrodysplasia ossificans progressiva)

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Chandra Kanta, Rashmi Kumar.
A ten-year-old feminine youngster born to a blood-related marriage introduced with bilateral toe deformities and a number of bony swellings on the neck and torso that elevated in quantity and dimension for 3 years. (Figure 1a) There was restricted motion of the neck, shoulders and kyphoscoliosis. Examination of the skeleton revealed calcification of the tender tissues over these areas. (Figure 1b) Serum calcium was regular.

Figure 1a

Figure 1a

Figure 1b

Figure 1b
What's the prognosis?

Fibrodysplasia ossificans progressiva FOP is a uncommon disabling hereditary connective tissue dysfunction characterised by symmetrical congenital abnormalities of the large toes and thumbs with progressive postnatal heterotopic ossification of soppy tissues, together with these associated to striated muscle mass, resulting in everlasting incapacity. 1 It impacts women and men alike, with a present worldwide prevalence of about 1 case in 2 million individuals. 2 The calcification of the tender tissues begins within the first decade of life with a mean of 5 years. 3 Episodes of painful tender tissue swelling happen, usually brought on by tender tissue accidents, intramuscular injections, viral infections, muscle stretching, falls, or fatigue. These flares remodel skeletal muscle mass, tendons, ligaments, fasciae and aponeuroses into heterotopic bones and make motion not possible. 3 Although most FOP instances are sporadic non-inherited mutations, a small variety of inherited FOP instances present germline transmission in an autosomal dominant sample. Heterozygous activating mutations within the activin receptor IAperctivin-like kinase-2 ACVRI, ALK2, a bone morphogenetic protein BMP sort I receptor, happen in all sporadic and familial instances of FOP. 1,2 The differential prognosis consists of progressive bony heteroplasia, osteosarcoma, lymphedema, tender tissue sarcoma, desmoid tumors, aggressive juvenile fibromatosis, and non-hereditary acquired heterotopic ossification. A skeletal examination is required to seek out out the extent of involvement. 4 Current remedy focuses on early prognosis, constant avoidance of accidents or iatrogenic injury, symptomatic aid from painful relapses, and optimization of residual operate. Short-term steroids are useful in acute exacerbations. Treatment with bisphosphonate and isotretinoin helps to some extent, however the illness progresses slowly and most sufferers are bedridden by the age of 30. 5,6 Death normally happens within the second by way of fourth many years from respiratory failure. 3


  1. Feldman G, Li M, Martin S, Urbanek M, Urtizberea JA, Fardeau M, et al. Fibrodysplasia ossificans progressive: An inherited illness with extreme heterotopic ossification mapped to human chromosome 4q27-31. Am J Hum Genet. 2000; 66: 128-135 [CrossRef] [PubMed] [PMC free article]
  2. Shore EM, Xu M, Feldman GJ, Fenstermacher DA, Cho TJ, Choi IH, et al. A recurrent mutation within the BMP sort I receptor ACVR1 causes inherited and sporadic fibrodysplasia ossificans progressiva. Nature Genetics 2006, 38: 525-527 [CrossRef] [PubMed]
  3. Cohen RB, Hahn GV, Tabas JA, Peeper J, Levitz CL, Sanda A, et al. The pure course of heterotopic ossification in sufferers with progressive fibrodysplasia ossificans: a research of forty-four sufferers. J Bone Joint Surgery Am. 1993; 75: 215-219 [CrossRef] [PubMed]
  4. Cremin B, Connor MJ, Beighton P. The radiological spectrum of fibrodysplasia ossificans progressiva. Clin Radiol. 1982; 33: 499-508 [CrossRef]
  5. Kaplan FS, Glaser DL, Pignolo RJ, Shore EM. A brand new period for Fibrodysplasia ossificans progressiva: A medicinal goal for the second skeleton. Exp Opin Biol Ther. 2007; 7: 705-712. [CrossRef] [PubMed]
  6. Illingworth RS. Myositis ossificans progressiva: Brief overview and report of two instances handled with corticosteroids and adopted up for six years. Arch Dis youngster. 1971; 46: 264-268 [CrossRef] [PubMed] [PMC free article]

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