2a. Metastatic papillary thyroid carcinoma in cerebellar tissue (Haematoxylin and eosin stain, x100). 2b. Low power view of the left level VI neck tumour where the cells infiltrated into skeletal muscle. No identifiable normal thyroid or lymph node tissue was seen (H&E stain, x20). 2c. Area of perineural and lymphovascular invasion in the left level VI tumour (H&E stain, x 40). 2d. The papillary thyroid carcinoma stained positively for BRAFV600E (x100).