Appendix mucocele mimicking a complex ovarian cyst.

Area of Science:

• Gastroenterology
• Surgical Pathology

Background:

• Appendiceal mucocele is a rare cystic dilatation of the appendix caused by mucus accumulation.
• Diagnosis is often incidental during abdominal screening or surgery for unrelated conditions.
• Symptomatic presentation commonly involves right lower quadrant abdominal pain, mimicking appendicitis.

Observation:

• A 26-year-old female was scheduled for surgery due to a complex ovarian cyst.
• Laparoscopic exploration revealed an appendiceal mucocele, not an ovarian cyst.
• The surgical plan was altered to perform a laparoscopic appendectomy.

Findings:

• The case demonstrates an unusual presentation of appendiceal mucocele.
• Laparoscopic surgery facilitated the intraoperative diagnosis and management.
• The appendix was successfully removed via laparoscopic appendectomy.

Implications:

• This case underscores the importance of thorough laparoscopic exploration, even when a primary diagnosis is suspected.
• Appendiceal mucocele should be considered in the differential diagnosis of abdominal masses and pain.
• Laparoscopic appendectomy is a viable treatment for appendiceal mucocele.