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Am Surg. 1999 Jan;65(1):6-10.

Leiomyosarcoma of the colon: a second malignant neoplasm after treatment for a Wilms' tumor.

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  • 1Department of General Surgery, Medical College of Georgia, Augusta, USA.


Leiomyosarcoma of the colon is a rare malignancy. We report the case of a 33-year-old woman with a leiomyosarcoma of the colon occurring as an intussusception 30 years after receiving abdominal irradiation for a Wilms' tumor. A review of the prior and current treatment for Wilms' tumor is discussed, as well as the association between second malignancies and abdominal irradiation. Leiomyosarcoma of the colon usually presents in the fifth and sixth decades of life and is more common in men. The most common symptom is pain. Ninety per cent are diagnosed at surgery for treatment of bleeding, perforation, or obstruction. Surgery remains the primary treatment. Leiomyosarcomas of the gastrointestinal tract are radioresistant, and adjuvant chemotherapy has shown no survival benefit. The overall prognosis is poor, with mean 5-year survival of 28 per cent. General surgeons need to be aware of the possibility of second malignant neoplasms after primary treatment of childhood cancers. Proper reporting is essential to study the long-term effects of early treatment of childhood cancers and in predicting the best treatment outcomes for these patients.

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