Table 2.

Histopathological findings of the 172 lesions according to the World Health Organization (WHO) Classification of Tumours (ICD-O)

Histopathological findings	n
Benign adnexal masses	81
Serous cystadenoma	11
Mucinous cystadenoma	6
Seromucinous cystadenoma	10
Serous cystadenofibroma	4
Mucinous cystadenofibroma	1
Mucinous adenofibroma	1
Mature teratoma	15
Endometriotic cyst	7
Brenner tumour	1
Fibroma and fibrothecoma	14
Tumour-like lesion (functional cyst, dysfunctional cyst, corpus luteum, hydrosalpinx, haematosalpinx)	11
Borderline adnexal masses	7
Serous borderline tumour	2
Mucinous borderline tumour	4
Serous borderline tumour with foci of intraepithelial carcinoma	1
Malignant adnexal masses	84
High-grade serous carcinoma	44
Low-grade serous carcinoma	8
Mucinous carcinoma	1
Clear cell carcinoma	2
Endometrioid carcinoma	5
Sex cord-stromal tumour	3
Germ cell tumour	1
Undifferentiated carcinoma	1
Fallopian tube carcinoma	2
Ovarian metastases	17