[Carcinoma metastasis in cutaneous osseous metaplasia. Differential diagnosis of osseous tumor metaplasia].

The formation of metastases in heterotopic ossifications is a very rare finding. The example of a 63-year old male who underwent Billroth II procedure because of recurrent duodenal ulcers 30 years ago and median laparotomy of the upper abdomen because of blunt abdominal trauma 9 years ago shows the formation of metastasis of a carcinoma found in the gastroenteral anastomosis in a focus of heterotopic ossification, which was located in the scar of the upper abdominal laparotomy.