There are many causes of disturbed bowel habits. In this rare case of mucocele of appendix, patient presented with disturbed bowel habits of increased frequency, urgency and semisolid stool. Ultrasound of abdomen revealed fusiform cyst just below umbilicus. Differential diagnoses included mesenteric cyst, duplication cyst and mucocele of appendix. Coronal and saggital reformats of CT abdomen confirmed its origin from ceacum. Its tip was in contact with sigmoid colon. Surgical resection was carried out and histopathology revealed mucinous cyst adenoma.