The heterotopic ossification (HO) on abdominal scars is a rare but very unconfortable finding. It causes pain, induration and discomfort in the scar, leading patients to undergo reoperation. This report aims to describe a case of HO, and especially to call attention of surgeons to fibroblast transforming potential, once its close relationship with HO is undeniable. Therefore the surgeon should endeavor all atempts on good surgical practice to avoid HO occurrence. He should also associate pure tissue repair techniques to prosthetic management of incisional hernias, in the hope that patient's fibroblast grow factors can be offered to the wound healing as a biologically reinforcement of the repair.
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