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An algorithm to maximize use of minimally invasive parathyroidectomy
Roderick M Quiros1, Joseph Alioto, Scott M Wilhelm
1Department of General Surgery, Rush University Medical Center, Chicago, IL 60612, USA.
Archives of Surgery (Chicago, Ill. : 1960)
|May 12, 2004
Summary
Cervical ultrasonography (CUS) aids minimally invasive parathyroidectomy (MIP) when technetium Tc 99m sestamibi-labeled single-photon emission computed tomography (SPECT) scans are inconclusive. CUS improves gland localization, increasing MIP success and avoiding bilateral neck exploration.
Area of Science:
- Endocrinology
- Nuclear Medicine
- Surgical Oncology
Background:
- Minimally invasive parathyroidectomy (MIP) relies on precise preoperative localization of abnormal parathyroid glands.
- Negative or ambiguous technetium Tc 99m sestamibi-labeled single-photon emission computed tomography (SPECT) findings can impede successful MIP.
Purpose of the Study:
- To evaluate the utility of cervical ultrasonography (CUS) in improving preoperative localization of parathyroid glands when sestamibi SPECT scans are non-diagnostic.
- To assess the impact of CUS on the success rate of MIP and the avoidance of bilateral neck exploration.
Main Methods:
- A retrospective analysis of 71 patients with primary hyperparathyroidism who underwent both preoperative sestamibi SPECT and CUS.
- Comparison of imaging findings with intraoperative results to determine the accuracy of each modality for guiding MIP.
- Analysis of cases where CUS provided complementary information to sestamibi SPECT.
Main Results:
- Sestamibi SPECT accurately localized glands in 75% of patients, while CUS was accurate in 56%.
- In 5 patients with negative or ambiguous sestamibi scans, bilateral neck exploration was performed.
- MIP was successful in 91% of the remaining 66 patients; CUS was complementary in 15% of these cases, enabling MIP and avoiding bilateral exploration.
Conclusions:
- A positive sestamibi SPECT scan is generally sufficient for preoperative planning of MIP in primary hyperparathyroidism.
- When sestamibi SPECT findings are negative or ambiguous, CUS can localize an additional 14% of enlarged parathyroid glands.
- Preoperative CUS is a valuable adjunct to sestamibi SPECT, enhancing the success of MIP by improving gland localization and reducing the need for bilateral neck exploration.