Objective Summarizing the treatment experience of primary cardiac tumors in children. Methods The date of 24 children with primary cardiac tumors who underwent surgery in our department from July 2003 to September 2022 was collected and analyzed treatment efficacy. Results All patients completed the surgery successfully, including 21 cases of complete tumor resection, 2 cases of partial tumor resection, and 1 case of tumor biopsy. The location: 5 cases in the right atrium, 5 cases in the right ventricle, 6 cases in the left atrium, 6 cases in the left ventricle, 1 case in the left, right ventricle and ventricular septum, and 1 case in the ventricular septum. 23 cases were benign: 11 cases of myxoma, 7 cases of fibroma, 3 cases of rhabdomyoma, 1 case of infantile capillary hemangioma, and 1 case of lipoma. There was 1 case of borderline or malignant tumor. 23 patients were discharged successfully, 1 patient died of cardiac failure on the first day after operation. Follow-up was done from 5 months to 19 years and 2 months, 2 cases were lost to follow-up, and 1 case died of cardiac failure in the second year after operation due to severe mitral regurgitation. There was 1 case of tumor biopsy with space-occupying lesion gradually shrinking during follow-up. The prognosis of another 19 children with complete or partial tumor resection was good. There was no recurrence, enlargement, or reoperation of the tumor during the follow-up period. Conclusions Primary cardiac tumors in children are mostly benign. Surgery is effective, but the timing of surgery depends on the patient's condition.

Left renal vein stenting is a preferable therapeutic option for patients with nutcracker syndrome (NS). As a potential complication of stent implantation, stent migration from the original placement to the right ventricle is relatively rare but can seriously threaten the patient's life. Endovascular stent retrieval is the most beneficial procedure for coping with this fatal complication. In this report, we aimed to describe an effective but relatively feasible endovascular approach using the combination of a goose neck snare and a large bore sheath for the retrieval of a stent dislodged in the right ventricle.

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