title: Primary leiomyosarcoma of the aorta.
abstract: A case of primary leiomyosarcoma of the abdominal aorta is reported. The tumor replaced the full thickness of the aortic wall with formation of a large saccular aortic aneurysm filled with an admixture of tumor and mural thrombus. Electron microscopy of the surgical biopsy of the tumor revealed neoplastic smooth muscle cells with myofilaments and a discontinuous basal lamina. To our knowledge, leiomyosarcoma of the aorta has never been reported.
mesh_terms: D000328:Adult; D001018:Aortic Diseases / Q000473:pathology*; D006801:Humans; D007890:Leiomyosarcoma / Q000473:pathology*; D008297:Male; D009362:Neoplasm Metastasis