[Heterotopic ossification on a midline laparotomy scar after digestive surgery: etiopathogenic discussion about two cases].

Heterotopic ossification (HO) is rarely seen after abdominal surgery and usually occurs after orthopedic surgery. It is a benign affection with an unknown mechanism and an unpredictable occurrence rate; but some etiopathogenic hypotheses have been put forward. Therapeutic attitudes were not assessed in this study.