Hi Boon,
Great to hear from you,
I agree, they can be difficult.
I just scan the neck as per normal.
If there is any tissue in the thyroid bed, I treat it like thyroid tissue.
So if it has a normal thyroid texture and echogenicity I call it residual thyroid tissue.
If it is hypoechoic, or have punctate echogenic foci or macrocalcification I would call it suspicious, just like if it was a non post op patient.
Then I do a full node assessment of the neck examining the AJCC 6 levels. (please see my webinar about this on the website)
That makes a detailed scan.
You may find some scar tissue that mimics a suspicious thyroid nodule, this is a problem we will all face.
In these cases we can do Nuclear Medicine to ascertain if there is any thyroid tissue present, or a FNA to sample the suspicious area.
Have a great day,
Steve.