Two were serous and one was a mucinous borderline tumour
. This prevalence was similar to that observed by other authors.
The most common ultrasound subjective impression was mature teratoma (22/46 cysts), followed by simple cysts (12/46 cysts), haemorrhagic cysts (6/46 cysts), endometriomas (5/46 cysts) and one possible mucinous Borderline tumour
. The latter was confirmed later on histology as the stage FIGO 1A intestinal type mucinous Borderline tumour
In case of ovarian tumours, a diagnosis of borderline tumour
was also given on frozen section.
Ameloblastoma is a borderline tumour
as it is locally invasive and rarely metastasizes.
 showed that out of 545 patients with epithelial ovarian cancer, 49 were under 35 years of age, with most of them having histopathological features of borderline tumour
. Advancing age could therefore be an important prognostic factor.
The commonest borderline tumour
was borderline serous tumour (4/5).
High-grade serous carcinoma arising in a low-grade serous carcinoma and micropapillary serous borderline tumour
of the ovary in a 23-year-old woman.
Of the 136 ovarian tumours, according to histologic diagnosis 91 (66.91%) of ovarian tumours were benign and 42 (30.9%) were malignant including 3 (2.2%) borderline tumour
The last patient had unilateral oophorectomy 4 years ago with the diagnosis of borderline tumour
of the ovary.
One borderline tumour
(glomangiopericytoma) was also seen.
Gross of Mucinous Borderline Tumour
Grade 0 indicates benign tumour, Grade III and above are malignant tumours and Grade I indicates borderline tumour