Schwannomas are rare tumors derived from the cells of Schwann that form the neural sheath. When located in the gastrointestinal tract, they constitute together with leiomyoma, leiomyoblastoma, and leiomyosarcoma, the gastrointestinal stromal tumors (GIST). Peripheral nerve sheath tumors represent 2-6% GIST with most common location, the stomach and the small intestine. Schwannomas of the colon and rectum are extremely rare and radical excision with wide margins is mandatory, due to their tendency to recur locally and become malignant, if left untreated. In the present study, we report a rare case of a sigmoid schwannoma, which was successfully treated in our department and reviewed the literature.

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The use of extracorporeal circulation and deep hypothermic circulatory arrest provides a good method for radical excision of renal carcinomas involving the IVC with satisfactory morbidity and long-term survival results. Cooperation of urologists and cardiac surgeons is necessary for this type of operation.

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We report the one-stage surgical management of a 68-year-old patient with renal cell carcinoma and serious hematuria combined with coronary artery disease and unstable angina. After the accomplishment of coronary revascularization without cardiopulmonary bypass, we proceeded to nephrectomy and resection of the renal tumor at the same time. The patient's postoperative course was uneventful, and at 17 months of follow-up, the patient showed no signs of recurrence. To the best of our knowledge, such a case has never been reported before in the literature.