Colorectal cancer conventional radiotherapy treatment technique with sparing the testicles

Colorectal cancer was the third most common cancer in 2012, with higher percentage of incidence in less developed countries. In a less developed countries usually conventional radiotherapy technique is used for treatment of colorectal cancer. Using this technique testicles receive a dose from scattered radiation, due to the divergence of fields towards the testicles. We tried to re-duce a testicular dose avoiding the divergence of fields towards the testicles. For that aim 28 mail patients (mean age 51.8 years), treated with 45 Gy using the conventional 3 field technique were selected and subjected to retrospective dosimetric study using the avoiding divergence technique. Significant statistical difference was showed between the two proposed techniques (5.66 Gy, 3.53 Gy; p <0.0001) in favour of avoiding divergence technique (median of the min-imum doses to the testicles: 0.20 Gy, 0.09 Gy and the median of the maximum doses to the testicles: 15.32 Gy, 14.00 Gy). Patients with rectal cancer who are going to receive radiotherapy treatment with conventional radiotherapy tech-nique, are at risk of permanent infertility. This paper presents conventional ra-diotherapy technique, for the patients with rectal cancer which will, due to re-duction of medium testicular dose, reduce the risk of infertility. *Correspondence to: Edis Dedovic, Depertment of medical physics and radiation protection, University Clinical Centre Tuzla, Ul. prof. dr. Ibre Pašića, Tuzla 75000, Bosnia and Herzegovina, Tel: +38761675094; E-mail: edis.djedovic@yahoo.com