Browsing by Author "Yalcin, Veli"

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Robotic-assisted partial nephrectomy without using ureteral stent: a single center experience
(AVES, 2016-01-01) Ozkan, Burak; Coskuner, Enis Rauf; Yalcin, Veli
Objective: To share our results of robotic assisted partial nephrectomy (RAPN) we performed without using ureteral stent in a single center from Turkey. Material and methods: Medical records of consecutive 45 patients (34 men and 11 women) who underwent RAPN for kidney lesions between March 2011 and December 2014 were retrieved, and evaluated. All the procedures were performed by a transperitoneal approach without using ureteral stent prior to surgery. Renal artery clamping was used in all cases and intraoperative ultrasonography was used in 2 cases. Results: Patients undergoing RAPN had a mean tumor size of 4.42 cm (2-8) and a mean renal nephrometry score of 5.82 (4-11). The mean estimated blood loss was 250 mL (150-450 ml) and the mean operative time was 195 minutes (150-300). There was no statistical difference between the preoperative and postoperative serum creatinine levels at the first follow-up visit (0.9 vs. 0.95, p= 0.087). Surgical margin positivity was not detected in any patient, and the mean surgical margin distance was calculated as 0.4 mm (0.2-10). In only 1 patient disease recurrence was detected at the 21st month of the the follow-up period, and no distant metastases was reported in our patients at a mean follow-up of 10 months (3-36 mos). Our complication rate was 11.1\% and according to the Clavien system complications were as
Spontaneous Retroperitoneal Hemorrhage Due to Chromophobic Type Renal Cell Carcinoma Requiring Emergency Action: Case Report
(ORTADOGU AD PRES \& PUBL CO, 2012-01-01) Coskuner, Enis Rauf; Ozkan, Burak; Yalcin, Veli
Spontaneous retroperitoneal hemorrhage is a quite rare disease. Appropriate treatment should be done after the cause of the disease had been detected. A complete clinical information and detailed radiologic examination are required for accurate diagnosis. In this study, a 76-year-old female patient who was evaluated in the emergency department of our hospital and found to have an abruptly developed retroperitoneal hemorrhage and hemorrhagic shock due to a big renal mass is presented. The patient required immediate radical nephrectomy. Pathological diagnosis was chromophobe type renal cell carcinoma with an invasion into the perinephric fat (pT3a). Subsequent staging after the operation failed to indicate any metastaic disease and there was no local or distant metastates in the first year follow-up.
The Role of Partial Nephrectomy without Arterial Embolization in Giant Renal Angiomyolipoma
(HINDAWI LTD, 2012-01-01) Coskuner, Enis Rauf; Ozkan, Burak; Yalcin, Veli
Angiomyolipoma is a benign neoplasm composed of varying admixtures of blood vessels, smooth muscle cells, and adipose tissue. Because of an increased risk of spontaneous haemorrhage, surgical approach is needed greater than 4-8 cm size. We here report our partial nephrectomy experience in the 24 cm size giant angiomyolipoma. 26-year-old woman referred to our clinic with a 24 cm size angiomyolipoma in her lower pole of right kidney. The inferior vena cava was deviated to the left by the mass. All the blood tests were normal and we offered her the choices of partial nephrectomy or nephrectomy. Right subcostal approach was used. The patient underwent resection of the mass with a safety region of 1 cm. Frozen section evaluation was consistent with angiomyolipoma and free for surgical margin. Warm ischemia time was 35min. and intraoperative bleeding volume was 200 cc. Postoperative 2nd day the drain was taken and hospital stay was 4 days. In literature we observed very rare angiomyolipoma cases with such a large dimension treated by partial nephrectomy without arterial embolization. If technically suitable partial nephrectomy is the main chioce in this kind of benign lesions in young patients.