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Abstract
Background. Between 5% and 10% of patients who undergo cervical exploration for primary hyperparathyroidism
will have persistent or recurrent hyperparathyroidism. Many of these patients have
parathyroid tumors in unusual locations. One such site of ectopic parathyroid tissue
is an undescended parathyroid adenoma at or superior to the carotid bifurcation. We
describe our experience with the preoperative localization and surgical management
of undescended parathyroid adenomas.
Methods. From 1982 to 1993 a consecutive series of 2,55 patients have undergone localization
studies and surgical exploration for persistent or recurrent hyperparathyroidism at
the Clinical Center of the National Institutes of Health. Operative strategy was determined
by review of the patient's surgical history, disease reports, and data from localizing
studies. Patients with an underscended parathyroid adenoma identified before the operation
were examined with a direct approach high in the neck. Patients who did not have definitive
preoperative localization were explored with the previous transverse cervical incision.
Results. Seventeen undescended parathyroid adenomas were identified in 255 patients. Thirteen
(76%) of 17 patients had an undescended parathyroid adenoma precisely localized before
the operation and were examined via a limited, oblique incision high in the neck anterior
to the sternocleidomastoid muscle. In the 13 patients who had undergone accurate localization
before the operation, the median operative lime was 75 minutes compared with 235 minutes
for four patients who did not have an undescended parathyroid adenoma identified before
the operation and were examined via a previous transverse cervical incision. All patients
were cured of their hyperparathyroidism.
Conclusions. Undescended parathyroid adenomas were the cause of failed cervical exploration in
17 (7%) of 255 patients, Accurate preoperative localization of these lesions is possible
in most cases with a combination of noninvasive and invasive modalities. Successful
preoperative localization can convert a prolonged exploration of the neck and mediastinum
into a brief, curative procedure 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.