Colorectal polyps inspection (1) digital rectal examination examination: diagnosis of polyps in the lower rectum, digital rectal examination is essential. DRE can be touched round, pedunculated or sessile; smooth surface can be moved, soft and flexible mass, multiple polyposis, the palpable rectal cavity about the size of grapes, ranging from round shaped masses. that put there blood.
Colorectal polyps inspection (2) Colonoscopy: Colonoscopy is the preferred means of diagnosis of colorectal polyps, not only clear the size of polyps, number, shape, location, determine the histological type polyps and presence of cancer can also be used biopsy and endoscopic removal of polyps. In recent years, with the stain application and development of electronic endoscope magnification of the small colon polyps and the diagnosis of small lesions have new progress.
Chromoendoscopy spraying method that is 0.1% -1, including the microscope. 0% blue indigo violet and 0.5% -1.0% solution of methylene blue solution. Can not absorb the former and the epithelial pigment remain in the storage recessed to punch clear lesions, indicating uplift, flat, sunken small lesions; which is absorbed by the colored mucosa, pit not colored, clearly shows that pit form, according to the nature of the lesion identification of morphological changes.
Colorectal polyps Check (3) X-ray barium enema: fecal matter before the examination should be thoroughly clean the intestinal tract, or affect the diagnosis. Good photos mucosal gas ripening phase double contrast is an effective way to display polyps. But the X-ray barium enema in the high rate of misdiagnosis and missed diagnosis rates. Therefore, only when patients can not tolerate when colonoscopy. To use this method.
Colorectal polyps check (4) CT colonoscopy simulation (CTC): This check should be thoroughly cleaned before proceeding, and filled intestinal gas, diameter 10 mm for the lesion, CT colonoscopy simulation sensitivity and specificity were 75% and 90%. False positive result was mainly due to inadequate bowel preparation resulting in residual waste, and hold the resulting artifacts. Or to the normal mucosal folds nodular mistaken for a polyp in the colon hydrotherapy solution by adding markers and other method can effectively reduce the incidence of false positives. False-negative results are due to observation of factors or technical factors (uplift over and the membrane surface less than 2 mm) caused. Colonoscopy by CT simulation comparison with colonoscopy found polyps larger than 1 cm, no difference between the detection rate of 0.5-0.9 cm polyps, CT simulation colonoscopy detected 28%. CT colonoscopy simulation can show the anatomy of the colon, to identify the polyps have a higher rate of patient tolerance is good, check the time is short, no damage and so on. The advantage of colonoscopy is to look not only disease, but also for treatment, biopsy.
Check colorectal polyps (5) colonoscopy fluorescence imaging method: This method is organized by the choice of spectral irradiance have endoscopic fluorescence imaging, to detect non-polypoid and polypoid colorectal adenomas. In a colon resection specimens in vitro, the method of examination of abnormal lesions and positioning with high sensitivity and specificity. These findings support the colonoscopy when fluorescence guided biopsy measures.
Check colorectal polyps (6) pathological examination: after the removal of intestinal polyps. Sent to biopsy, may be made by histopathological diagnosis.