Neuroblastoma is the most common extracranial solid tumor in children. Most common sites of metastases from neuroblastoma are bone marrow, bone and lymph nodes, however cardiac metastasis is rarely seen. Metastatic cardiac tumors are 20 to 40 times more common than primary cardiac tumors. Mechanism of cardiac metastasis can be hematogenous, lymphatogenous, and direct extension/infiltration of tumor cells. Usually right heart metastasis is seen. Left ventricular metastatic tumor has never been reported with neuroblastoma.
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