Case | PET/CT finding | ceCT finding | Followup | Anticipated impact of ceCT on management |
---|---|---|---|---|
3.1 | Complete metabolic response in liver metastases 2 weeks post-6 cycles of chemotherapy | Improved but persistent liver lesions (largest 13 mm) | True positive. (Small volume residual viable tumour in hepatic resection) | No change |
3.2 | No abnormal FDG uptake in peripancreatic nodal mass | Peripancreatic mass (37 mm) | Repeat PET 2 months later, peripancreatic nodal mass became FDG avid. (Original PET performed 1 month post completion of chemoradiotherapy) | Appropriate change |
3.3 | No abnormal FDG uptake | Locoregional nodal disease (N1) | Histology of resected primary showed locoregional nodal disease (PET performed post neoadjuvant chemotherapy). | No change |
3.4 | No metastases | Locoregional nodal disease (N1) | Nodes positive for metastases on primary excision specimen. (PET performed post neoadjuvant chemoradiotherapy) | No change |