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CA19-9 elevation in ovarian mature cystic teratoma: Discrimination from ovarian cancer – CA19-9 level in teratoma

Hye-yon Cho, Kidong Kim, Yong-Tark Jeon, Yong-Beom Kim, Jae Hong No

Med Sci Monit 2013; 19:230-235

DOI: 10.12659/MSM.883865

Background: We aimed to identify clinical characteristics of ovarian mature cystic teratoma (MCT) in association with CA19-9 elevation, and to determine if CA19-9 is a useful marker in discrimination of MCT from ovarian cancer (OC).
Material and Methods: Medical records of 322 women with pathologically-confirmed MCT or OC (stage 1 or 2) were reviewed retrospectively. The relationships between the characteristics of MCT (mean diameter, bilaterality, and pathologic components) and elevated CA19-9 were evaluated. Tumor markers in MCT were compared to those in OC.
Results: MCTs with CA19-9 elevation were correlated with a larger diameter (8.53±3.84 cm vs. 6.95±3.97 cm, p=0.002) and presence of fat component (67.1% vs. 32.9%, p<0.001), compared to those with normal CA 19-9. Although the incidence of CA19-9 elevation was not different between patients with MCT and OC (p=0.700), the mean value of CA19-9 was higher in those with OC (114.66±20.66 U/mL vs. 508.58±261.63 U/mL, p=0.013). In addition, simultaneous elevation of CA125 and CA19-9 was associated with a higher probability of malignant neoplasm (p<0.001; odds ratio: 23.7; 95% confidence interval: 8.863–63.576) than single elevation of CA 19-9.
Conclusions: CA19-9 could be an important tool in the diagnosis of ovarian mature cystic teratoma. CA19-9, in combination with CA125, might be a useful marker in discrimination of MCT from cancer.

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