PURPOSE: The purpose of our study was to assess the role of ultrasonography (US) before surgical treatment of primary hyperparathyroidism. MATERIALS AND METHODS: We retrospectively evaluated 77 patients (60 women, 17 men; mean age 59 years) with primary hyperparathyroidism who underwent parathyroid US prior to surgery. Sixty-five of 77 (84%) patients had undergone (99m)Tc- sestamibi (MIBI) scintigraphy. The results were correlated with the surgical and histopathological findings. RESULTS: Surgery revealed 85 abnormal parathyroid glands in 77 patients (70 adenomas, 15 hyperplasias). The locations of the parathyroid glands were typical cervical (n=77), thyrothymic ligament (n=3), carotid sheath (n=2), and mediastinum (n=3). In two patients, intrathyroid microadenoma was diagnosed by histopathology. Seventy-four enlarged glands in 64 patients were correctly identified at US. Per-patient sensitivity and positive predictive values, respectively, were 84% (64/76) and 99% (64/65) for US, 68% (44/65) and 100% (44/44) for scintigraphy and 91% (59/65) and 98% (59/60) for both techniques combined. We weighed 63 out of 85 glands, obtaining a value of 1,004+/-1,564 mg; 460 mg (mean+/-standard deviation; median). CONCLUSIONS: Preoperative detection and localisation of enlarged parathyroid glands can be based on US, an inexpensive and widely available method, limiting the use of scintigraphy to those cases with negative and/or doubtful findings on US.
PURPOSE: The purpose of our study was to assess the role of ultrasonography (US) before surgical treatment of primary hyperparathyroidism. MATERIALS AND METHODS: We retrospectively evaluated 77 patients (60 women, 17 men; mean age 59 years) with primary hyperparathyroidism who underwent parathyroid US prior to surgery. Sixty-five of 77 (84%) patients had undergone (99m)Tc- sestamibi (MIBI) scintigraphy. The results were correlated with the surgical and histopathological findings. RESULTS: Surgery revealed 85 abnormal parathyroid glands in 77 patients (70 adenomas, 15 hyperplasias). The locations of the parathyroid glands were typical cervical (n=77), thyrothymic ligament (n=3), carotid sheath (n=2), and mediastinum (n=3). In two patients, intrathyroid microadenoma was diagnosed by histopathology. Seventy-four enlarged glands in 64 patients were correctly identified at US. Per-patient sensitivity and positive predictive values, respectively, were 84% (64/76) and 99% (64/65) for US, 68% (44/65) and 100% (44/44) for scintigraphy and 91% (59/65) and 98% (59/60) for both techniques combined. We weighed 63 out of 85 glands, obtaining a value of 1,004+/-1,564 mg; 460 mg (mean+/-standard deviation; median). CONCLUSIONS: Preoperative detection and localisation of enlarged parathyroid glands can be based on US, an inexpensive and widely available method, limiting the use of scintigraphy to those cases with negative and/or doubtful findings on US.
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