[Diagnosis of ovarian teratomas with two-dimensional ultrasound]

To investigate the value of two-dimensional ultrasound in the diagnosis of tertoma in the ovary.

The sonographic images of 278 cases of ovarian teratomas confirmed by surgical pathology were reviewed.

According to the surgical pathological results of the 278 cases, 95.3% (265/278) were benign, and 4.7% (13/278) were malignant. Among those, 88.5% (246/278) cases were unilateral, and 11.5% (32/278) were bilateral. Compared with the surgical pathological results, the rate of accurate diagnosis with ultrasound was 95.0% (264/278), the rate of misdiagnosis was 3.6% (10/278), and the rate of missed diagnosis was 1.4% (4/278). Among the benign cases, the rate of accurate dingnosis was 95.1% (252/265); the rate of misdiagnosis was 3.4% (9/265); and the rate of missed diagnosis was 1.5% (4/265). Among the 13 malignant cases, the rate of accurate diagnosis and misdiagnosis were 92.3% (12/13) and 7.7% (1/13), respectively.

Two-dimensional ultrasound can be the first choice in diagnosing teratoma. Although the sonographic images of ovarian teratoma have specialities, they should be differentiated from other ovarian tumors, such as chocolate cyst of ovary, denaturation of subserous myoma, inflammatory mass, and etc.