Never ever underestimate the power of Prayer!!
I just came from a specialist surgeon who wrote a report on my thyroid findings. Literally quoting each and every test. Discussing each point as being within normal limits for an incidental case like mine. He wrote me a letter in the format required by INZ with the end summary clearly stating:
NO FUTURE TREATMENT REQUIRED AND IS HIGHLY UNLIKELY TO INCUR ANY FUTURE MEDICAL COSTS!!!
This was from a surgeon who specializes in endocrine surgery. My panel physician also stated that a "normal" endocrinologist would not have had any bearing on the matter since my hormone levels are perfectly normal and the concerns of the thyroid were physical in nature, hence the report from a surgeon was advised rather than an endocrinologist.
My medicals were sent off today with the echocardiograph report (to explain my functional murmur) and the report from the surgeon explaining VERY clearly that I have a simple multi-nodule thyroid, which was proven via biopsy to be benign and I have no clinical signs of a goiter (because it's simply not visible) or any impingement in my breathing (so that clears the concerns of "pressure on trachea" that was mentioned in my ultrasound report).
I honestly do not believe that the medical assessor will have any issues with the letter. Even my panel physician said he'd be very surprised if they came back looking for more.