Patient selection. Four patients were excluded for mixed tumour histology (one patient), uninterpretable imaging (two patients) or no evidence of disease recurrence on follow-up and no imaging of their primary tumour was available (one patient). Of the 37 patients with imaging, 13 patients only had imaging of metastatic disease on follow-up, with no imaging available for their primary tumour. FLC, fibrolamellar carcinoma; PACS, picture archiving computer systems.