Leiomyosarcoma as a second metachronous malignant neoplasm following colon adenocarcinoma. A case report and review of the literature.

Long-term cancer survivors are at increased risk for the development of second primary malignancies. This is usually associated with common genetic and etiologic factors and the treatment modality used for the primary cancer. In this paper we describe the case of a patient who developed a leiomyosarcoma in his left arm 5 years after he had a colon adenocarcinoma resected.