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TİNAY, İLKER

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TİNAY

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İLKER

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    Erectile dysfunction following radiotherapy and brachytherapy for prostate cancer: pathophysiology, prevention and treatment
    (SPRINGER, 2008) ŞİMŞEK, FERRUH; Akbal, Cem; Tinay, Ilker; Simsek, Ferruh; Turkeri, Levent N.
    Objectives Although detrimental impact on sexual function following radiotherapy (RT) and brachytherapy decreases the quality of life of prostate cancer survivors, the etiology, pathophysiology, prophylaxis and treatment of this condition has not yet been fully clarified. We reviewed the published literature in terms of etiology, treatment and possible prevention of erectile dysfunction (ED) following RT and/or brachytherapy. Method We have reviewed the literature through a MEDLINE search. Prostate cancer, erectile dysfunction, radiotherapy, brachytherapy, treatment and quality of life were used as keywords. Conclusion Both RT and brachytherapy result in high rates of ED. Although arterial damage seems to be the main cause of ED after RT, exposure of neurovascular bundle to high levels of radiation dose has been also implicated in some studies with brachytherapy. The radiation dose received by the corpora cavernosa at the crurae of the penis may also be important in the etiology of ED. The most important predictive factor of ED following RT is the treatment modality. Intensity-modulated radiotherapy and vessel-sparing prostate radiotherapy are new techniques but those treatments may not guarantee complete preservation of the erectile function. Patients need to be correctly informed on the possible sequela of radiation-based treatments on their sexual well-being while planning their treatment. Patients should also be informed about the possible treatment modalities for ED, which may develop in due course.
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    Long-term results of endoscopic treatment of vesicoureteral reflux with the sub-ureteric injection of calcium hydroxyapatite
    (SPRINGER, 2007) ŞİMŞEK, FERRUH; Tarcan, Tufan; Tinay, Ilker; Temiz, Yusuf; Simsek, Ferruh
    Aim To review our long-term results of the sub-ureteric injection of calcium hydroxyapatite in the endoscopic management of vesicoureteral reflux (VUR) in children. Materials and methods A sub-ureteric injection of calcium hydroxyapatite was given to 14 children (23 ureteral units) affected by VUR grades I-V. All children were followed-up with monthly urine cultures, and a renal ultrasound was done on the postoperative 4th week, while the first voiding cysto-urethrogram (VCUG) control was performed on postoperative week 12. The children were followed-up with yearly renal ultrasound and monthly urine cultures, thereafter. Data from the patients' charts were retrospectively analyzed regarding the outcome of the procedures. Results Mean follow-up time was 52 months (47-60 months). VUR was cured in 47.4% of cases after a single injection. After the second injection the global success rate was 52.1%. Ureteroneocystostomy was performed on seven refluxing ureters of five children unresponsive to sub-ureteric injection therapy. One patient underwent nephroureterectomy because of a non-functioning kidney secondary to ureteral obstruction due to migration of material at the 23rd month postoperatively. Conclusion Although favorable short-term success rates have been reported with the sub-ureteric injection of calcium hydroxyapatite without any side effects, our long-term results showed a low success rate, with the only reported serious morbidity.