Imaging of Leiomyosarcoma of the Inferior Vena Cava: A Comparison of 3 Cases

Leiomyosarcoma of the inferior vena cava is a rare tumour arising from the smooth muscle fibres of the media with a mean size at diagnosis generally around 12cm (range 2-38cm). Leiomyosarcoma of the inferior vena cava is a rare clinical entity that has been described in fewer than 300 patients in the literature. Leiomyosarcoma is the most common primary tumour of the inferior vena cava and the second most frequent retroperitoneal neoplasm in adults. This study compares 3 cases of Leiomyosarcoma of the inferior vena cava discovered incidentally and with symptomatic late-stage disease.