Secondary parathyroid hyperplasia
28 year old male on long term dialysis. Abnormal bone profile non responsible to medication.
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1.7cm well defined hypervascular low echogenicity nodule inferior to the lower pole of the left lobe of the thyroid gland.
Thyroid gland normal.
Secondary hyperparathyroidism is a recognized complication of long standing renal failure - in this case a dialysis dependent patient for many years.
The parathyroid glands becomes enlarged due to hypertrophy.