Evaluation of cryostat frozen section in the diagnosis of surgical biopsies.

Cryostat frozen section technique was used on 1300 surgical biopsies. On final paraffin sections diagnosis there were 270 benign neoplasms, 200 malignant neoplasms and 830 inflammatory and non-neoplastic lesions. The overall accuracy using frozen section was 98.48 per cent with one false positive result (0.07 per cent), 17 false negative results (1.3 per cent) and 2 deferred diagnosis (0.15 per cent).