Bilateral ovarian coexistence of mature cystic teratomas and endometriomas: a unique case report

Natthakrit Anansitthikorn

Authors

Natthakrit Anansitthikorn Nakhon Pathom Hospital

Keywords:

mature cystic teratoma, endometrioma, endometriotic cyst, ovary, coexistence

Abstract

Ovarian mature cystic teratomas (MCTs) and ovarian endometriomas represent highly prevalent benign ovarian lesions in women of reproductive age. While their individual occurrence is common, the ipsilateral coexistence of both lesions within the same ovary is rare, and their bilateral ovarian coexistence has not been found. A 33-year-old nulligravid woman presented with a gradually enlarging pelvic mass. Serum tumor markers, CA125 and CA19-9, were elevated. Imaging studies revealed bilateral ovarian masses consistent with MCTs, with a suspected collision tumor on the left ovary. The patient underwent bilateral salpingo-oophorectomy. Histopathology confirmed the presence of MCTs and endometriomas in both ovaries. Multiple cystic follicles were also observed bilaterally. Based on the available literature, this study describes the first documented case of bilateral ovarian coexistence of mature cystic teratomas and endometriomas, supported by detailed macroscopic and microscopic findings.

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