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  • Title: [Radical nephrectomy and thrombectomy for Mayo clinic stage III tumor thrombus: a surgical technique and clinical experience].
    Author: Liu Z, Ma LL, Tian XJ, Wang GL, Hou XF, Zhang SD, Deng SH.
    Journal: Beijing Da Xue Xue Bao Yi Xue Ban; 2017 Aug 18; 49(4):597-604. PubMed ID: 28816272.
    Abstract:
    OBJECTIVE: To evaluate the effectiveness and safety of radical nephrectomy and inferior vena cava thrombectomy in the treatment of patients with Mayo III tumor thrombus, and to introduce our experience and surgical technique. METHODS: The clinical data of 8 patients with Mayo III tumor thrombus from October 2014 to September 2016 were analyzed retrospectively. Of the 8 patients, 3 were male and 5 were female. The average age was (50.8±18.7) years (18 to 77 years). The average body mass index (BMI) was (22.7±4.4) kg/m2 (15.2 to 30.8 kg/m2). Imaging suggested the right renal tumor in all the 8 cases. The average tumor size was (7.9±2.5) cm. Open radical nephrectomy and inferior vena cava thrombectomy was conducted in 5 cases and laparoscopic surgery in 3 cases, and 1 case was converted to open surgery. RESULTS: All the 8 surgeries were completed successfully with no death case. The average surgery time was (370.3±101.6) min, ranging from 272-567 min. The average vena cava blocked time was (41.0±12.1) min, ranging from 17-55 min. The blood loss volume was (1 181.3±915.7) mL, ranging from 200-3 000 mL. During the operation, 5 cases were infused with suspended red blood cells, the amount of blood transfusion was 800-2 000 mL. 3 cases were infused of plasma with 400-1 000 mL. The average hospital stay was 9-23 d, with an average of (14.1±4.0) d. In the 8 patients, 4 cases underwent inferior vena cava wall resection because of invasion by tumor thrombus. Preoperative serum creatinine was 60-101 μmol/L, with an average of (76.4±15.3) μmol/L. Serum creatinine 1 week after the operation was 74-127 μmol/L, with an average of (100.8±21.1) μmol/L. Pathological diagnosis showed 6 cases of clear cell carcinoma, 1 case of papillary carcinoma type II, and 1 case of Ewing's sarcoma. Among the 8 patients, early postoperative complications occurred in 5 cases. Postoperative complications were graded as level II, according to the Clavien classifications. The 8 cases were followed up for 2 to 24 months with an average of 11.3 months. There was 1 patient who suffered from lung metastasis. CONCLUSION: Our initial clinical results show that radical nephrectomy and inferior vena cava thrombectomy is safe and effective for patients with Mayo III tumor thrombus. The wide extension of grade III vein tumor thrombus leads to the difficulty of operation technique. Sufficient preoperative preparation, rich operative experience and skills can improve the safety of operation.
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