Mature cystic teratoma of the ovary with a grossly visible, completely developed intestinal loop: A case report and review of the literature.

Rationale: The mature cystic teratoma of the ovary (MCTO), is composed of mature differentiated elements, thus showing highly differentiated tissue and highly morphological heterogeneity. Although gastrointestinal epithelium can be identified in 7% to 13% of cases of MCTO, the occurrence of visible, functional, and fully developed loop tissue is rare in clinical practice.

Patient Concerns: A 17-year-old female patient presented with persistent abdominal pain.