Non-gynaecological Cytology
Thyroid cytology


This case was mistakenly thought to be a medullary carcinoma because of the presence of cytoplasmic granules; it proved to be a follicular carcinoma. The granules are not the fine metachromatic ones found in medullary carcinoma and probably represent lysosomes. In our experience the vast majority of follicular carcinomas are labelled as suspicious follicular lesions.