ABDOMINAL RECURRENCE OF OSTEOGENIC-SARCOMA - A CASE-REPORT

Purpose: Nonpulmonary metastases from osteogenic sarcoma are rare. A p atient had a localized osteogenic sarcoma of the left femur which recu rred in the abdomen, a previously unreported metastatic site. Patient and Methods: An 18-year-old boy was treated for osteosarcoma. He had a bdominal pain, vomiting, weight loss, and symptoms of intestinal obstr uction at the time of relapse. Results: The patient had diffuse widesp read intraabdominal osteogenic sarcoma as the only site of initial rec urrence. Abdominal computerized tomography revealed ascites and calcif ied masses on the hepatic and peritoneal surfaces. Laparoscopic visual ization of the abdomen showed hemorrhagic ascites and multiple calcifi ed tumor on the peritoneum, diaphragm, and liver. A biopsy of a repres entative lesion confirmed the diagnosis of osteogenic sarcoma. The pat ient died from progressive disease. Conclusion: As the initial treatme nt for patients with osteogenic sarcoma is intensified, the pattern of metastases may change. Unusual sites of recurrence such as in this pa tient may become more prevalent. A clinical presentation of an acute a bdomen in a patient previously treated for osteogenic sarcoma should p rompt suspicion of intraabdominal recurrence.