Heterotopic Ossification at Uncommon Sites: A Case Series of 4 Rare Cases

Abstract

Heterotopic ossification (HO) is a condition of formation of mature lamellar bone in the extra skeletal soft tissue where bone does not usually exist. It is most commonly seen in muscle tissue and central nervous system following trauma. In this case series, we have reported 4 rare cases of heterotopic bone formations at uncommon sites. One case of HO in clear cell renal cell carcinoma, one case of HO in tendoachilles, one case of HO in intramuscular vascular malformation and one case HO in abdominal incision scar. HO is a rare entity. In most of the cases exact etiology is unknown. Further studies needed for more conclusive information regarding the clinical significance of heterotopic ossification.