A case of marantic endocarditis with systemic emboli in a patient with metastatic soft tissue sarcoma

Clinical manifestations of cancer can be categorized as resulting from direct tissue injury from the primary tumor, distant metastatic spread, or aberrant biological activity, also known as a paraneoplastic syndrome. Soft tissue sarcomas are a rare group of malignant tumors of mesenchymal origin which typically present with direct tissue injury, exerting their harmful potential by compression and mass effect. We describe a rare case of an occult retroperitoneal soft tissue sarcoma presenting with marantic endocarditis. To date, there is a paucity of available medical literature relating sarcoma to marantic endocarditis.