Publications by authors named "Lale Atahan"

Aim: To standardize diagnosis and treatment of childhood Wilms tumor (WT) in Turkey.

Methods And Patients: Between 1998 and 2006, WT patients were registered from 19 centers. Patients <16 years with unilateral WT whose treatment started in first postoperative 3 weeks were included.

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Introduction: In this prospective study, the efficacy and safety of radiotherapy combined with zoledronic acid was evaluated.

Materials And Methods: Breast cancer patients with painful bone metastases were randomized to either high- or reduced-dose radiotherapy. All patients received zoledronic acid (4 mg) every 28 days from the beginning of radiotherapy.

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Background: To evaluate the clinical characteristics, treatment regimens, and outcome of children with Hodgkin lymphoma in a developing country over a period of 34 years.

Methods: This paper retrospectively evaluates the treatment and prognosis of 614 children with Hodgkin lymphoma disease between 1971 and 2005. All patients were treated with chemotherapy, and also received radiotherapy.

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Objectives: Uterine papillary serous carcinoma (UPSC) is a rare subtype of endometrial carcinoma, characterized by a poor outcome. We sought to better analyze the effect of surgery and adjuvant therapies on this disease.

Methods: A retrospective analysis was performed on the records of 138 women diagnosed with UPSC between 1986 and 2003 in the framework of the Rare Cancer Network.

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Purpose: We retrospectively evaluated the impact of percent positive axillary nodal involvement on the therapeutic outcomes in patients with non-metastatic breast cancer receiving postmastectomy radiotherapy and chemotherapy.

Materials And Methods: Between January 1994 and December 2002, the medical records of 939 eligible non metastatic breast carcinoma patients were analyzed. Chest wall radiotherapy was indicated in case of positive surgical margin, tumor size equal or more than 4 cm, skin-fascia invasion.

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We aimed in this study to evaluate the clinical and radiological features of the late recurrence of Wilms' tumor in children. Among 553 children diagnosed with Wilms' tumor between 1972 and 2004, four cases were determined to be late recurrences. Clinical, histopathological parameters, treatment details, and outcomes of the patients were evaluated retrospectively.

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This study is designed to assess the toxicity and therapeutic effectiveness of concurrent gemcitabine and radiotherapy in patients with unresectable pancreatic cancer. Concurrent gemcitabine (400 mg/m2/wk) in six weekly cycles starting on d 1 of radiotherapy (50.4 Gy; 1.

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Purpose: To quantify the effect of bladder volume on the dose distribution during intracavitary brachytherapy for cervical cancer.

Methods And Patients: The study was performed on 10 women with cervical cancer who underwent brachytherapy treatment. After insertion of the brachytherapy applicator, the patients were transferred to the computed tomography unit.

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Objective: The aims of this study are to evaluate the patients with astrocytomas and to investigate survival rates and prognosis.

Patients And Methods: Five hundred fourteen patients diagnosed with brain tumor between 1972 and 2003 were retrospectively analyzed. Three different chemotherapy regimens were used according to years.

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Purpose: To investigate the role of the resistive index measured with transvaginal color Doppler ultrasonography (TVCDUS) for assessing the radiotherapy response of cervical carcinoma and to compare it with magnetic resonance findings.

Materials And Methods: A total of 13 patients with advanced stage cervical carcinoma (>IIA) underwent magnetic resonance imaging (MRI) and TVCDUS exams 6 months prior to and 6 months after radiotherapy. Pre- and post-treatment resistive indices obtained from the central and peripheral zones of the tumor were compared.

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Objective: To evaluate prospectively the efficacy of a single fraction of high-dose radiotherapy in patients with Kaposi's sarcoma.

Patients: Between 1994 and 2004, 47 patients with Kaposi's sarcoma were treated at Hacettepe University, Department of Radiation Oncology. Thirteen (28%) patients received chemotherapy before radiotherapy and were referred due to recurrent or progressive disease or intolerance to chemotherapy.

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To analyze changes in the overall survival (OS) rate of children with Wilms tumor treated in a single institute over nearly 30 years. This study included 327 children with a newly diagnosed Wilms tumor. Their median age was 3 years, and the male:female ratio was 1.

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To investigate the incidence and outcome of secondary neoplasms in pediatric patients treated for childhood cancer. Between December 1971 and January 2000, a total of 5859 patients younger than age 17 were diagnosed and treated for childhood cancers in our center. Of this group, 1511 (36%) patients were followed for more than 36 months.

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Background: To evaluate the outcomes of radiation therapy treatment of male patients with breast cancer in our single institutional cohort and discover possible adverse prognostic factors.

Methods: We retrospectively evaluated 42 male patients (median age 55; range 33-77 years) with breast cancer. Patients were irradiated postoperatively in 2 Gy/fraction/day to chest wall +/- lymphatics.

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Background: To evaluate the clinical characteristics, treatment regimens, survival, and late complications in patients with nasopharyngeal carcinoma.

Procedure: Eighty-four patients diagnosed with nasopharyngeal carcinoma between 1972 and 2002 were retrospectively evaluated. Tumor status, lymph node involvement, metastasis, and stage were assessed according to the TNM classification.

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The authors report 3 cases of Hodgkin's disease with intracranial involvement. The patients were 4, 12, and 15 years old (male/female=1/2). Initially, they were treated with ABVD or COPP chemotherapies and low-dose involved field radiotherapy.

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Trismus is a more common symptom in NPC patients with young age and an indicator of advanced primary tumour. Overall response rate after treatment was 88%. Trismus recovered in majority of patients at the end of treatment and patients with complete recovery of trismus may have a better survival.

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Klippel-Trénaunay-Weber syndrome (KTWS) is characterized by combined vascular malformations of capillary, venous, and lymphatic types usually observed during infancy or childhood. In this report, we describe two KTWS patients treated with radiotherapy after long-term conservative treatment or multiple surgical interventions. The first patient, a 15-year-old female, presented with vascular masses located on the right upper extremity.

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The incorporation of a taxane into an anthracycline-containing regimen in the adjuvant treatment of breast cancer is a promising approach. In this study, we aimed to evaluate the safety and efficacy of four cycles of FEC (fluorouracil 500 mg/m2, epirubicin 70 mg/m2, cyclophosphamide 500 mg/m2, every 3 weeks) followed by four cycles of paclitaxel (175 mg/m2 every 3 weeks) in the adjuvant treatment of node-positive and other high-risk breast cancer patients. A total of 88 female patients were enrolled.

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The aim of this study was to evaluate the clinical characteristics and treatment results of 17 children with cavoatrial tumor extension of Wilms tumor. Of the 360 Wilms tumors diagnosed between 1980 and 2000, 17 patients with intracaval thrombus were identified from the medical records at the pediatric oncology department of Hacettepe University. The following data were collected and reviewed: age, sex, presenting symptoms, tumor site, presence of anaplasia, stage, associated congenital anomalies, localization of tumor thrombus, radiologic findings, type and duration of preoperative chemotherapy, response to preoperative chemotherapy, recurrences, and survival.

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Background And Purpose: We retrospectively evaluated the therapeutic outcomes of patients with primary spinal cord astrocytomas treated with conventional radiotherapy at our institute.

Patients And Methods: Between May 1975 and December 1997, 26 patients with histologically proven spinal cord astrocytomas were treated with conventional radiotherapy, and twenty-four eligible patients were evaluated. Median age was 19 years (2-41 years).

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Objectives: Our primary objective was to determine the response rate; secondary objectives were to assess the toxicity rate, and disease-free and overall survival rates in patients with locally advanced breast cancer (LABC) receiving a cyclophosphamide (500 mg/m2), mitoxantrone (12 mg/m2) and 5-fluorouracil (500 mg/m2) (CMF) chemotherapy regimen.

Patients And Methods: The data from 74 patients with LABC with neoadjuvant CMF chemotherapy were analyzed retrospectively. Preoperatively, all patients received 3 cycles of CMF on day 1, repeated every 21 days.

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Purpose: To evaluate the outcome of patients
Materials And Methods: We performed a database search maintained by the Department of Radiation Oncology of Hacettepe University School of Medicine for patients with nasopharyngeal cancer who were View Article and Find Full Text PDF

Purpose: We aimed to investigate Ebstein-Barr virus (EBV) latent membrane protein-1 (LMP-1) and Interleukine-10 (IL-10) expression in nasopharyngeal carcinoma (NPC) patients and to evaluate their prognostic significance.

Material And Methods: Between 1993 and 1999, 166 patients were treated with the diagnosis of nonmetastatic NPC at our department. The expression of LMP-1 and IL-10 was investigated by using an immunohistochemical approach in 74 (53 male, 21 female) patients whose paraffin embedded tissue samples were available.

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