History noted -
Since it’s already 6months since your completion of treatment , if it clinically suspicious we could go for a repeat biopsy from that site .
Also it’s common that slight changes can occur in the size of lesion in CT scan . But even if the size is is decreasing if viable cancer cells are present there , you should be considered for further treatment . So better to go for a biopsy if your treating doctor is finding it suspicious clinically .
Post operative cases especially after getting radiotherapy it’s little bit difficult to fully decide based on just CT SCAN report .
Next Steps
If your doctor is finding it clinically suspicious go for a repeat biopsy
Health Tips
Hope your doubt is cleared .Just get back to us , if are still having doubt regarding how to proceed