Table 5.

Unmatched Frozen Section Diagnosis

Frozen section	HPE diagnosis	n
Benign – mature teratoma	Immature teratoma	2	Non representative sample Foci of immature areas not sampled during FS
Benign mucinous tumour	Borderline mucinous tumour	4	Non representative sample Frozen sample not representative Size of tumour : 175mm to 300mm No. of FS : 2 – 3
Benign epithelial tumour	Borderline serous tumour	1	Non representative sample Frozen sample not representative Size of tumour : 165mm No. of FS : 2
Borderline mucinous tumour	Benign mucinous tumour	2	Overestimation due to very huge ovarian tumour Size of tumour : 230mm and 300mm No. of FS : 3
Borderline mucinous tumour	Malignant mucinous tumour	4	Non representative sample Foci of malignant stromal invasion not sampled during FS Size of tumour : 135 – 210mm No. of FS : 2 – 3
Borderline epithelial tumour	Malignant endometrioid tumour	1	Non representative sample Frozen sample not representative Size of tumour : 60mm No. of FS : 3
Borderline epithelial tumour	Malignant monodermal teratoma with somatic type tumour (Papillary carcinoma)	1	Interpretational error Colloid materials seen in FS mimics mucinous tumour and papillary structures mimic borderline features.