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Abstract
Background. Our purpose was to analyze the causes of persistent and recurrent sporadic primary
hyperparathyroidism (PD and RD).
Methods. The histopathology, complications, and results of reoperation were studied. Five
hundred sixty-eight patients with primary hyperparathyroidism were operated on initially
by one surgeon and underwent follow-up examination for 3.7 ± 3.8 years. During the
operation, all parathyroids were sought and confirmed by biopsy. Enlarged glands were
resected, and subtotal parathyroidectomy was done for multiglandular disease (hyperplasia).
Results. The cure rate after the initial surgical procedure was 96.4%, PD = 2.8% (16 of 568).
At reoperation (10 of 16), nine of 10 were cured (90%) (two adenomas, six hyperplasias,
one lung carcinoma). RD was documented (at 4, 4, 10, 15, 16) in five (0.9%) patients,
one with parathyroid carcinoma and four with hyperplasia. Thirty-five patients with
PD and two patients with RD were referred for reoperation: 17 with adenomas (eight
mediastinal) and 18 with hyperplasias (one mediastinal gland). Preoperative calcium
level was higher for PD (12.57 mg/dl) and RD (13.89 mg/dl) versus all cases (12.19
mg/dl) (p < 0.03 and p < 0.0005, respectively). After reoperation, normocalcemia was
achieved in 47 (92.%) of 51 patients with PD or RD. Transient hypocalcemia occurred
in 22% of patients (permanent, 2.0%) and transient hoarseness in 2.0% of patients
(no permanent nerve damage). Permanent hypocalcemia and nerve damage after 568 initial
operations were 0% and 0%, respectively. Two perioperative deaths occurred.
Conclusions. We conclude that inadequate neck exploration or resection of hyperplastic tissue
accounts for most cases of PD and RD. Optimal results necessitate intraoperative identification
of all parathyroids whenever possible, with minimal morbidity.
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Article info
Footnotes
☆Presented at the Fifteenth Annual Meeting of the American Association of Endocrine Surgeons, Dearborn, Mich., April 17–19, 1994.
Identification
Copyright
© 1994 Published by Elsevier Inc.