Frozen sections are used to provide rapid gross or microscopic diagnoses that can guide surgeons during intra- or peri-operative management of a patient. Intraoperative consultations are sought by surgeons for various reasons, including diagnosis of a previously undiagnosed lesion (mainly benign vs. malignant), assessment of margin status, detection of spread of disease, e.g. lymph nodes metastases, instant evaluation of adequacy of lesional tissue, and collection of fresh frozen tissue that requires additional testing and identi cation of tissue origin (1). Frozen section diagnosis of surgically resected tumours and tissues has become a regular practice over the past 60 years (2,3).