INTRODUCTION Screening can prevent colorectal cancer from becoming advanced by early detection of precancerous lesions. Cost-effectiveness analysis of colorectal cancer screening methods is highly necessary due to increased prevalence, decreased age at onset and the limited budget in Iran. METHODS Methods of screening currently available in Iran were selected. A systematic search revealed the...

BACKGROUND AND AIMS This was a prospective blinded study to compare computed tomography (CT) colonography, performed with multidetector arrays CT scan (MDCT), with conventional colonoscopy for the detection of colorectal neoplasia. METHODS Fifty patients were examined by MDCT after standard bowel preparation and rectal air insufflation in the supine and prone positions. Data sets were examine...

Volume 95 No. 2 February 2012 a seventy-six year old Female presented to her gastroenterologist for a workup of iron deficiency anemia, hematochezia, and newly diagnosed celiac disease. Other symptoms included fecal incontinence and anal discomfort thought to be related to hemorrhoids as well as mild bilateral lower abdominal pain. A colonoscopy revealed an endoluminal tubular foreign body firm...

CT colonography has been used to detect colonic polyps and cancers, but its effect in practice will also be influenced by the frequency with which extracolonic lesions of various types are detected. We performed a systematic review of the types of incidental lesions found on CT colonography. This is necessary to model the benefits and harms of detecting extracolonic lesions. Primary clinical st...

Abstract Small bowel malignancies are rare, though colorectal cancers common. This article reviews the current imaging recommendations for small and malignancies. Contrast-enhanced computed tomography (CT) is modality of choice diagnosis/staging/response evaluation/follow-up colonic tumors. Magnetic resonance pelvis with high-resolution T2-weighted images in sagittal, oblique axial, coronal pla...