References:1. Alvarado A. A practical score for the early diagnosis of acute appendicitis. Ann Emerg Med. 1986;15(5):557-64.2. Quartey B. Interval appendectomy in adults: a necessary evil? J Emerg Trauma Shock . 2012;5(3):213-6.3. Butt MQ, Chatha SS, Ghumman AQ, Farooq M. RIPASA score: a new diagnostic score for diagnosis of acute appendicitis. J Coll Physicians Surg Pak. 2014;24(12):894-7.4. Arnbjornsson E. Acute appendicitis and dietary fiber. Arch Surg. 1983;118(7):868-70.5. Chan J, Fan KS, Mak TLA, Loh SY, Ng SWY, Adapala R. Pre-operative imaging can reduce negative appendectomy rate in acute appendicitis. Ulster Med J [Internet]. 2020 Jan 1 [cited 2021 Jul 5];89(1):25–8. Available from: https://pubmed.ncbi.nlm.nih.gov/32218624/6. Chong CF, Thien A, Mackie AJ, Tin AS, Tripathi S, Ahmad MA, et al. Comparison of RIPASA and Alvarado scores for the diagnosis of acute appendicitis. Singapore Med J. 2011;52(5):340-45.7. Mohan D, Barnato AE, Rosengart MR, Farris C, Yealy DM, Switzer GE,et al . Trauma triage in the emergency departments of nontrauma centers: an analysis of individual physician caseload on triage patterns. J Trauma Acute Care Surg 2013;74(6):1541–7.8. Huston JM, Kao LS, Chang PK, Sanders JM, Buckman S, Adams CA, et al. Antibiotics vs. appendectomy for acute uncomplicated appendicitis in adults: Review of the evidence and future directions. Surg Infect (Larchmt) 2017;18:527–35.9. Di Saverio S, Podda M, De Simone B, Ceresoli M, Augustin G, Gori A, et al. Diagnosis and treatment of acute appendicitis: 2020 update of the WSES Jerusalem guidelines [Internet]. Vol. 15, World Journal of Emergency Surgery. BioMed Central Ltd.; 2020 [cited 2021 Jul 5]. Available from: https://pubmed.ncbi.nlm.nih.gov/32295644/10. Ambe PC. Negative Appendectomy. It is Really Preventable? Journal of Investigative Surgery. Taylor and Francis Ltd; Vol. 32, 2019 [cited 2021 Jul 5]. p. 474–5. Available from: https://pubmed.ncbi.nlm.nih.gov/29608342/11. Mostbeck G, Adam EJ, Nielsen MB, Claudon M, Clevert D, Nicolau C,et al . How to diagnose acute appendicitis: ultrasound first. Insights Imaging 2016;7(2):255–63.12. Pinto F, Pinto A, Russo A, Cuppolino F, Bracale R, Fonio P, et al . Accuracy of ultrasonography in the diagnosis of acute appendicitis in adult patients: review of the literature. Crit Ultrasound J 2013;5(Suppl 1):S2.13. Kim DW, Suh CH, Yoon HM, Kim JR, Jung AY, Lee JS, et al. Visibility of normal appendix on CT, MRI, and sonography: A systematic review and meta-analysis. Am J Roentgenol . Vol 2018 Sep 1 [cited 2021 Jul 5];211(3):W140–50. Available from: https://pubmed.ncbi.nlm.nih.gov/30040469/14. Alvarado A. A practical score for the early diagnosis of acute appendicitis. Ann Emerg Med 1986;15(5):557–64.15. Kalan M, Talbot D, Cunliffe WJ, Rich AJ. Evaluation of the modified Alvarado score in the diagnosis of acute appendicitis: a prospective study. Ann R Coll Engl 1994;76(6):418–9.16. Díaz-Barrientos CZ, Aquino-González A, Heredia-Montaño M, Navarro-Tovar F, Pineda-Espinosa MA, Espinosa de Santillana IA. The RIPASA score for the diagnosis of acute appendicitis: A comparison with the modified Alvarado score. Rev Gastroenterol Mex . 2018 Apr 1 [cited 2021 Jul 5];83(2):112–6. Available from: https://pubmed.ncbi.nlm.nih.gov/29426650/17. Noor S, Wahab A, Afridi G, Ullah K. Comparing Ripasa Score And Alvarado Score In An Accurate Diagnosis Of Acute Appendicitis. J Ayub Med Coll Abbottabad. 2020 Jan-Mar;32(1):38-41.18. Khan I, Ur Rehman A. Application of Alvarado scoring system in diagnosis of acute appendicitis. J Ayub Med Coll Abbottabad 2005;17(3):41–4.19. Khan S, Usama M, Basir Y, Muhammad S, Jawad M, Khan T, Usman A, Abbas A. Evaluation Of Modified Alvarado, Ripasa And Lintula Scoring System As Diagnostic Tools For Acute Appendicitis. J Ayub Med Coll Abbottabad. 2020 Jan-Mar;32(1):46-50.20. Sulu B. Demographic and Epidemiologic Features of Acute Appendicitis. Append Collect Essays World Rij InTech 2012;169–78.21. Sartelli M, Baiocchi GL, Di Saverio S, Ferrara F, Labricciosa FM, Ansaloni L, et al .  Appendicitis Worldwide (POSAW). World J Emerg Surg. 2018 Apr 16;13:19. doi: 10.1186/s13017-018-0179-0.22. Lopes Vendrami C, Xu X, McCarthy RJ, Shin JS, Goodhartz LA, Horowitz JM, Kim D, et al. Body mass index as an indicator of the likelihood of ultrasound visualization of the appendix in pregnant women with suspicion of appendicitis. Abdom Radiol (NY). 2020 Sep;45(9):2637-2646. PMID: 32514628.23. Kereshi B, Lee KS, Siewert B, Mortele KJ. Clinical utility of magnetic resonance imaging in the evaluation of pregnant females with suspected acute appendicitis. Abdom Radiol (NY). 2018 Jun;43(6):1446-145524. Tsai SH, Hsu CW, Chen SC, Lin YY, Chu SJ. Complicated acute appendicitis in diabetic patients. Am J Surg 2008;196(1):34–9.25. Bach L, Donovan A, Loggins W, Thompson S, Richmond B. Appendicitis in Diabetics: Predictors of Complications and Their Incidence. Am Surg. 2016 Aug;82(8):753-8.Funding disclosure : None to declare