ABSTRACT Introduction The pathophysiology of appendicitis likely stems from obstruction of the appendiceal orifice leading to an increase in intraluminal and intramural pressure, resulting in small vessel occlusion and lymphatic stasis. Organ supplied by an end artery, such as the appendix, are more prone to the deleterious effects of arterial occlusion. The continuous cigarette smoking might be associated with a greater risk for developing atherosclerosis. Objectives The aim is to evaluate the effect of cigarette smoking on the incidence of complications of acute appendicitis. Methods Patients suffered from symptoms and signs suggesting acute appendicitis were examined and investigated. a multiple items collecting data questionnaire including smoking status and exclusion of confounders were constructed. The complicated and non-complicated appendicitis were compared concerning their smoking status. Results Seventy-two Patients were included in this study; the mean age of studied patients was 24.13 ± 9.1 years. The age of 57% of patients were below the mean age and considered as younger age group, while the remaining 43% of patients were equal or above the mean age which considered as older age group. Thirty-three percentage of patients had ≥ 36 hours prehospital delay and considered as delay group, while the remaining 67% of patients had < 36 hours prehospital delay which considered no delay group, males constitute 54% of studied patients. smokers constitute 29% while the remaining 71% of studied patients were nonsmokers, 61.9% of the smokers developed complications of appendicitis. Conclusion Perforated acute appendicitis is higher among current tobacco smokers.

Abstract It is uncertain whether terminal ileum intubation should be performed routinely during colonoscopy, as there is uncertainty regarding its diagnostic value. The aim of the present study is to assess the diagnostic yield of terminal ileum intubation during colonoscopy according to indications for colonoscopy. This is a cross-sectional study in which the results of 294 total colonoscopy procedures were reviewed; ileal intubation was performed in 269 (91.49%) patients. The indications for colonoscopy, the results of ileoscopy, and the histopathological results of ileal biopsies were evaluated. A total of 54 (20%) out of 269 patients who had successful intubation into the terminal ileumshowed macroscopic abnormalities on the terminal ileum. Biopsies were positive in 4 out of 54 (7.4%); all were of Crohn disease. Two were erosions (9.5%.) and 2 were ulcers (18.8%). The two erosions were presented as abdominal pain, abdominal pain and alternating bowel motion. Those with ulcers were presented with diarrhea and perianal disease. Conclusions Considering the low diagnostic yield of ileal intubation during colonoscopy, the decision to performileoscopy or not during colonoscopy needs to bemade on a case-by-case basis. However, routine ileal intubation, brief attempts should be considered despite low diagnostic yield.