results twelve original studies fulfilled the inclusion criteria. the current literature suggests that the learning curve of robotic rectal surgery varies between 15 and 44 cases and is probably shorter to that of laparoscopic rectal surgery. conclusions there are only a few studies assessing the learning curve of robotic rectal surgery and they possess several differences in methodology and ou...

background: in recent years, neoadjuvant chemoradiation and subsequent surgical resection with total mesorectal excision has been shown to increase local control with decreased toxicity. neoadjuvant chemoradiotherapy is the standard treatment for locally advanced rectal cancer. in this study we evaluated the efficacy a cox-2 inhibitor on pathologic response, sphincter preservation and acute tox...

in recent years, tuberculosis has had a significant rise, caused mainly by the epidemic of acquired immunodeficiency syndrome. the anorectal tuberculosis is a very rare presentation. herein, we presented a 67-year-old man who has had renal transplantation and presented with hematochezia and painful defecation since 6 months before. biopsy was taken from the lower rectal ulcerated lesion. histop...

methods study on 34 patients diagnosed with rectal adenocarcinoma referred to oncology clinic was conducted. the treatment plan included 4050 cgy radiotherapy and 5fu, xeloda chemotherapy. all patients were assessed with 1/5 t mri 6 to 8 weeks after treatment. t1 and t2 images with sagittal, cronal and axial planes with and without contrast agent were obtained and interpreted by two radiologist...

  Rectal cancer is the second most common cancer in large intestine. The prevalence and the number of young patients diagnosed with rectal cancer have made it as one of the major health problems in the world. With regard to the improved access to and use of modern screening tools, a number of new cases are diagnosed each year. Considering the location of the rectum and its adjacent organs, ma...

background: in intracavitary brachytherapy for gynecological cancers, various techniques are used to locate the anterior rectal wall nearest to the sources but there is no consensus on the best method to do so. this study aimed to compare a technique used routinely in some centers that employs a wire marker to locate the position of the maximum rectal dose point, versus the method recommended b...

optimal management of low lying locally advanced rectal cancer remains a major challenge. this study was performed to evaluate the impact of preoperative external radiation therapy combined with systemic chemotherapy on sphincter preservation and local control in locally advanced low lying (<5 cm from anal verge) rectal cancer. a total of 25 consecutive patients with biopsy proven locally advan...

background: oxaliplatin (ox) significantly enhanced the antitumor activity of 5-fu in patients with advanced colorectal cancer and recently some phase ii trials have evaluated the feasibility and efficacy of oxaliplatin in neoadjuvant setting for treatment of locally advanced rectal cancer. on the other hand various studies have demonstrated that the overexpression of thymidylate synthase (ts) ...

cutaneous metastases of rectal carcinoma is a rare event. it occurs in fewer than 4% of all patients with rectal cancer. when present, it typically signifies a disseminated disease with a poor prognosis. early detection and proper diagnosis of metastatic rectal cancer can significantly alter treatment and prognosis. we report a 70-year-old male who underwent rectal resection with permanent colo...

rectal cancer is the second most common cancer in large intestine. the prevalence and the number of young patients diagnosed with rectal cancer have made it as one of the major health problems in the world. with regard to the improved access to and use of modern screening tools, a number of new cases are diagnosed each year. considering the location of the rectum and its adjacent organs, manage...