In the stomach and large intestine we meet only too frequently with the same type of malignant disease, whereas in the small intestine carcinoma is very rare. The explanation may be that the stomach and large gut are constantly dealing with solid matter which moves on slowly and the small gut with fluids quickly passing on. The surface epithelium of the stomach at one end, and the rectum (the s...

Background: Brachytherapy treatment planning in cervix carcinoma patients using two dimensional (2D) orthogonal images provides only point dose estimates while CT-based planning provides volumetric dose assessment helping in understanding the correlation between morbidity and the dose to organs at risk (OARs) and treatment volume. Objective: Aim of present study is to compare Internationa...

PURPOSE To describe dose-volume values with the use of water alone vs. a rectal balloon (RB) for the treatment of prostate cancer with proton therapy. MATERIALS AND METHODS We analyzed 30 proton plans for 15 patients who underwent CT and MRI scans with an RB or water alone. Simulation was performed with a modified MRI endorectal coil and an RB with 100 mL of water or water alone. Doses of 78-...

A case of duplication of the rectum is presented and the literature reviewed.

adenocarcinomas. Adenosquamous carcinomas with consisting of both glandular and squamous histologic components are a rare malignancy of the colon and rectum. This tumor type was originally described by Herheimer in 1907. Subsequent reports of adenosquamous carcinomas of the rectum and/or colon are limited as the estimated incidence of adenosquamous carcinomas of the colon and rectum is approxim...

  Background and Objectives: To compare pathologic complete response (pCR) in patients with advanced rectal cancer receiving neoadjuvant chemoradiotherapy (NACT) by 5-FU or Xeloda (capecitabine) with and without Eloxatin (oxaloplatin injection). Materials and Methods: Seventy-five consecutive patients with the diagnosis of advanced rectal adenocarcinoma were included. Two basic chemotherapy r...

Background: In the current study the effect of shielded colpostat on rectum received dose was calculated in cervical brachytherapy using Monte Carlo (MC) method. Materials and Methods: Two 60Co sources of GZP6 brachytherapy unit used for intracavitary treatments were simulated using MCNPX Monte Carlo code. Also the two types of colpostats including shielded and unshielded were simulated inside ...

BACKGROUND A knowledge based planning tool has been developed and implemented for prostate VMAT radiotherapy plans providing a target average rectum dose value based on previously achievable values for similar rectum/PTV overlap. The purpose of this planning tool is to highlight sub-optimal clinical plans and to improve plan quality and consistency. METHODS A historical cohort of 97 VMAT pros...