(99m)Tc MIBI SPECT findings in parathyromatosis--a rare entity causing recurrent hyperparathyroidism.

Parathyromatosis is a rare clinical condition resulting in recurrent hyperparathyroidism that often poses challenges in its diagnosis and complete surgical cure. We report the (99m)Tc MIBI SPECT findings in a patient with recurrent hyperparathyroidism requiring multiple parathyroid explorations. MIBI SPECT helped localize the areas of these "recurrent parathyroid lesions" that were often found outside of the expected locations within the neck.