Publications by authors named "Huseyin C Onal"

2 Publications

  • Page 1 of 1

Adjuvant Small Pelvic Radiotherapy in Patients with Cervical Cancer Having Intermediate Risk Factors Only - Is It Sufficient?

Oncol Res Treat 2017 21;40(9):523-527. Epub 2017 Aug 21.

Background: We sought to determine the outcomes of adjuvant small pelvic external beam radiotherapy (EBRT) and prognostic factors for survival and disease control.

Patients And Methods: We retrospectively evaluated 113 cervical cancer patients treated with postoperative median 50.4-Gy small pelvic EBRT. We treated the surgical bed, bilateral parametria, paravaginal soft tissues, upper third of the vagina, and presacral lymphatics.

Results: Median follow-up of all patients and survivors was 58 and 67 months, respectively. The 2- and 5-year overall survival (OS) and disease-free survival rates were 91 and 82%, and 85 and 74%, respectively. The locoregional failure rate was 10%. Age was a significant predictor for OS and distant metastasis-free survival (DMFS) on univariate analysis. The number of dissected lymph nodes being < 30 negatively affected the pelvic recurrence-free survival. The only independent predictor on multivariate analysis was older age for DMFS. Although no severe acute toxicity was observed, late grade ≥ 3 toxicity developed in 8 patients.

Conclusion: Small pelvic EBRT produces satisfactory survival and locoregional control with acceptable toxicity, and can be an alternative to whole pelvic EBRT in selected cervical cancer patients.
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September 2018

Five-year follow-up results for patients diagnosed with anaplastic astrocytoma and effectiveness of concomitant therapy with temozolomide for recurrent anaplastic astrocytoma.

Asian J Neurosurg 2012 Oct;7(4):181-90

Department of Neurosurgery, Baskent University Faculty of Medicine, Ankara, Turkey.

Background: Anaplastic astrocytoma (AA; WHO grade-III) patients determination of prognostic factors helps generating multimodal therapy protocols. For this purpose, in the Baskent University, Adana Medical Research Center, specific characteristics of AA patients who have surgery were retrospectively investigated and factors which affect prognosis has been determined.

Patients And Methods: Between January 2005 and 2009, 20 patients who have AA have been evaluated retrospectively. Totally, 20 patients had 31 operations. Sixteen patients had only adjuvant radiation therapy (RT). In the postoperative period, 8 patients received adjuvant RT. Nine of 10 patients with tumor recurrence received concomitant therapy with temozolomide (ConcT with TMZ) protocol. No adjuvant therapy protocol could be applied in three patients with poor general condition in the postoperative period.

Results: Median survival for patients died was 16±17 months; one year survival was 75% and five year survival 25%. After univariate analysis, preoperative Karnofsky performance score (KPS) was ≥80 (P=0.005577(*)), postoperative KPS was ≥80 (P=0.003825(*)), type of tumor resection (P=0.001751(*)), multiple operations (P=0.006233(*)), and ConcT with TMZ protocol (P=0,005766(*)) were all positive prognostic factors which extend the survival.

Conclusions: The results of the multivariate analysis did not put forward an independent prognostic factor acting on the survival period (P>0.05).
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October 2012