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Appendiceal mucocele is a rare disease with an incidence of 0.07-0.63% of all appendectomies and was first described in 1842 by Carl von Rokitansky. It is defined as an abnormal intraluminal accumulation of mucin. The clinical picture of AM can vary from asymptomatic mass in the right lower quadrant to symptoms of acute appendicitis. In some cases, AM can be found accidentally on CT performed due to other reasons or during surgery. Diagnosis consists mainly of imaging methods such as ultrasound, CT, and MRI with the finding of encapsulated cystic mass with calcifications. The main goal of surgical treatment is to remove an intact mucocele and prevent spillage of mucin into the peritoneal cavity. We present a case of large mucocele treated with laparoscopic right hemicolectomy.