Introduction: In brachytherapy, radioactive sources are placed close to the tumor, therefore, small changes in their positions can cause large changes in the dose distribution. This emphasizes the need for computerized treatment planning. The usual method for treatment planning of cervix brachytherapy uses conventional radiographs in the Manchester system. Nowadays, because of their advantages ...

PURPOSE To retrospectively assess the incidence of sub-serosal and uterine perforation of intra-uterine tandem in intracavitary high-dose-rate (HDR) brachytherapy for cervical cancer, and to evaluate its dosimetric implications on computed tomography (CT)-based treatment planning. MATERIAL AND METHODS Computed tomography images and brachytherapy plans of cervical cancer patients treated from ...

OBJECTIVE To verify whether bladder and ureter endometriosis had the same clinical features and disease behavior. DESIGN Case-control study. SETTING Multidisciplinary group in Sao Paulo, Brazil. PATIENT(S) A total of 690 patients were submitted to laparoscopy with histologically diagnosis of endometriosis between July 1999 and December 2006. Twelve of these patients had lesions affecting ...

PURPOSE To determine the optimal location of catheters in multichannel vaginal applicators to appropriately cover the vaginal cuff target and minimize dose to the organs at risk (OARs) and hot spots in the target. METHODS A new multichannel vaginal applicator with a diameter of 30 mmconsists of a single central catheter and an outer array of eight catheters. A total of 20 plans were generated...

conclusions silodosin use prior to vcug confers a statistically significant increase in bladder neck opening and visualization of posterior urethra. results in group a 19 out of 20 patients were able to achieve satisfactory bladder neck opening while in group b 10 out of 15 patients were able to achieve bladder neck opening. patients and methods patients were divided into two groups a and b con...

Laparoscopic multi-visceral resection in patients with T4 colorectal cancer remains controversial. A 73-year-old man was admitted to the hospital for rectosigmoid cancer directly invading the urinary bladder trigone without distant metastasis. We successfully performed complete resection by laparoscopic anterior pelvic exenteration while preserving the anus. After laparoscopic mobilization of t...

PURPOSE The aim of this work was to study the International Commission on Radiation Unit and Measurement (ICRU) for rectum (rICRU) and bladder (bICRU) dose behaviors in the treatment of cervical cancer by high dose rate (HDR) intracavitary brachytherapy (ICRT). MATERIAL AND METHODS A retrospective study was carried out on 38 patients with a total of 38 fractions (1st fraction of each patient)...

BACKGROUND To quantitatively evaluate the safety and related-toxicities of intensity modulated radiotherapy (IMRT) dose-volume histograms (DVHs), as compared to the conventional three-dimensional conformal radiotherapy (3D-CRT), in gynecologic malignancy patients by systematic review of the related publications and meta-analysis. METHODS Relevant articles were retrieved from the PubMed, Embas...