ObjectiveTo investigate the significance of endoscopic punctiform erosion around appendiceal orifice with diffused inflammation in left semicolon in the diagnosis of ulcerative colitis. MethodsTwenty-nine patients with endoscopic punctiform erosion around appendiceal orifice with diffused inflammation in left semicolon treated in West China Hospital from January 2007 to November 2012 were included in our study.Patients with either edema,ulcer,polyps around the appendiceal orifice,inflammation in the ascending colon or transverse colon,or segmental inflammation in left semicolon were excluded.The endoscopic characteristic changes and the final diagnosis were compared by means of the pathological biopsy. ResultsOf the total 29 patients with characteristic changes under the endoscope,26 patients were eventually diagnosed to have left-sided ulcerative colitis,one was identified to be with Cronh's disease,and the remaining two patients could not be classified. ConclusionOur findings suggest that the characteristic changes under the endoscope may help the diagnosis of ulcerative colitis.
ObjectiveTo explore the teaching effects of case-based learning (CBL) as an educational strategy in digestive diseases module teaching. MethodsSixty-three oral and dental medical senior students were randomly divided into two groups during February to June 2012. Among them, 31 students were enrolled in the CBL group accepting CBL teaching method based on certain cases, while the other 32 students were designated into the control group receiving traditional teaching method. Their scores in practice skill examination, analytical ability of medical records, module test scores and behavior observation results were compared. Questionnaire survey was performed for students in the CBL group. ResultsThere were no significant difference in scores of clinical practice skill examination and behavior observation results between the two groups (P>0.05). Students in the CBL group did significantly better in case analysis and module test scores (P<0.05). Questionnaire survey revealed that CBL method could significantly improve the learning interest, cultivate the ability to combine theory and practice, strengthen analytical skills and promote problem-solving abilities. The students were generally satisfied with the CBL teaching method. ConclusionCBL method has an obvious advantage in digestive diseases teaching.