This case report represents the first-time use of 4DCT to localize parathyromatosis. Parathyromatosis is a rare but problematic cause of recurrent hyperparathyroidism. Ultrasound and 4DCT may represent the best imaging modalities for identification and perioperative management to remove all affected tissue without reseeding. (AACE Clinical Case Rep. 2019;5:e384-e387) | Parathyromatosis A rare case of recurrent hyperparathyroidism localized by four-dimensional computed tomography
