September 24th, 2018

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Title:
Coexistence of Three Different Tumors in the Same Ovary: Borderline Mucinous Tumor, Mature Cystic Teratoma, and Endometriosis: A Case Report
Authors:  Jong Kil Joo, M.D., Ph.D., Ahrong Kim, M.D., Ph.D., Nam Kyung Lee, M.D., Ph.D., Kyung Un Choi, M.D., Ph.D., and Ki Hyung Kim, M.D., Ph.D.
 
BACKGROUND: Mature cystic teratomas are the most common germ cell tumors of the ovary. However, the synchronous presentation of borderline mucinous tumor, mature cystic teratoma, and endometriosis in the same ovary has not been widely reported.

CASE: A 42-year-old woman presented with progressive dysmenorrhea with abdominal fullness. Pelvic magnetic resonance imaging revealed a 21.3×9.0×19.4-cm sized multiseptated cystic mass with internal fat lobules and calcification in the pelvis. Laboratory examination revealed elevated levels of serum tumor markers (CA-125 110.6 U/mL and CA19-9 186 U/mL). On section, the tumor showed a multilocular cystic mass filled with mucinous fluid, sebum, and hairs. Microscopically, 3 tumor types were revealed: borderline mucinous tumor, mature cystic teratoma, and endometriosis. Immunohistochemically, mucinous tumor cells were positive for CK20 and MUC2, negative for CK7, and partially positive for CDX2.

CONCLUSION: The authors present a case of the simultaneous borderline mucinous tumor associated with mature cystic teratoma and endometriosis in the same ovary in a reproductive-age woman.
Keywords:  borderline mucinous tumor, endometriosis, germ cell tumor, mature cystic teratoma, mucinous tumor, ovary, teratoma
   
   
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