Table 3.

Radiological diagnosis

	Cystadenoma	Cystadenocarcinoma	Other benign tumor	Other malignancy	No qualitative
Cystadenoma subgroup	4	1	9	2	5
Cystadenocarcinoma subgroup	3	3	5	3	11

Ultrasonography, computed tomography or magnetic resonance imaging were not particularly effective modalities for diagnosing these rare lesions.