Re: Perforated Meckel's diverticulum from foreign body presenting with pain in the right iliac fossa Dear Editor, We read with great interest the article by Zhu et al. 1 The authors have presented this unique case interestingly and discussed it comprehensively. We would like to add a few pertinent details that you may find relevant and may be of interest to readers.The authors have mentioned most of the clinical presentations of Meckel's diverticulum (MD). 1 To complete the list, we would like to add 'persistent umbilical fistula', a relatively common presentation seen in 5-10% of cases. 2 The authors have also mentioned the factors that favour elective ileal resection. 1 We agree with the authors entirely and add that all these indications apply to the classical MD presenting on the antimesenteric border of the gut. Mesenteric MD is an atypical presentation that is being increasingly recognized. Mesenteric MD requires resection even if found incidentally, regardless of the risk factors as it is more likely to become symptomatic (90%) than classical MD. 3 Moreover, a review by Zani et al. demonstrated that leaving an incidentally found MD reduces the risk of post-operative complications without increasing remote complications. 4