Mismatch of Scintigraphies with 99mTc-MIBI and 99mTc-pertechnetate in a Patient with Hyperparathyroidism
Abstract
Sixty-two-year-old man was admitted to hospital for increased serum level of calcium (3.85 mmol/l) and incipient renal failure (urea 7.2 mmol/l, kreatinin 117 mol/l). The reason of hypercalcaemia was intensive explored.
Serum level of intact PTH was 383.6 pg/ml. We performed two-dimensional early and delayed (2 hours) scintigram after intravenous administration of 750 MBq 99mTc-sestamibi, i.e. double-phase technique.
There was detected focus (diameter 20 mm) of increased sestamibi uptake with slow wash-out in distal part right thyroid lobe. Planar scintigraphy obtained after intravenous administration of 185 MBq 99mTc-pertechnetate detected focus of increased 99mTc-pertechnetate uptake in the same point too.
Patient underwent right thyroid lobectomy. There was colloid nodular goiter.
Under right thyroid lobe was detected spherical particle. This particle was ablated (diameter 20 mm, weight 4 gram).
It was parathyroid adenoma.