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Suite 1 / 30 Main Drive,
Warana 4575
Ph: 07 5493 1649
Fax: 07 5493 1659
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Thyroid Scans

In this section, please find some additional information about some of the Nuclear Medicine examinations.

        Cold Nodule
        Autonomous Nodule
        Graves Disease
 
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Cold Nodule
History:

Multiple small nodules on ultrasound, largest 1cm in diameter in the right lobe. ? cold.

Scan Appearance:
There is irregular tracer uptake seen throughout both lobes with a prominent photopenic area in the mid pole of the right lobe.
Scan Findings:
Multinodular gland with a dominant cold nodule in the mid pole of the right lobe.


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Autonomous Nodule

History:

Suppressed TSH. Symptoms of fatigue and weight gain. Ultrasound demonstrates solid nodules in both lobes of the thyroid.

Scan Appearance:
There is diffusely increased tracer uptake in the large nodule in the left lobe (red arrow) and the smaller nodule in the upper pole of the right lobe of the thyroid (blue arrow). The thyroid elsewhere is not visible, which is consistent with suppression of uptake. The thyroid to background uptake ratio is moderately elevated measuring 18.8:1 (normal range 3 – 8:1).

Scan Findings:

Autonomously functioning nodules in both lobes of the thyroid. A review by an endocrinologist with consideration of antithyroid medications to achieve a euthyroid state is suggested. Treatment with radioactive iodine may be required for long term control of these toxic nodules.

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Graves Disease

History::

Clinically hyperthyroid. ? Grave’s disease.

Scan Appearance:
There is diffusely increased tracer uptake throughout both lobes of the thyroid which appears at the upper limits of normal in size. The thyroid to background uptake ratio is markedly elevated measuring 55.3 (normal range 3 – 8).

Scan Findings:
The scan appearances are typical of active Grave’s disease.


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