Abstract:
INTRODUCTION:Four-dimensional computed tomography (4DCT) is a new parathyroid localization technique not previously reported in Australia. It provides both functional and anatomical imaging in a single test, with superior sensitivity compared with sestamibi scintigraphy (SeS). This study examines the utility of 4DCT in defined clinical situations. METHODS:This is a retrospective cohort study in a tertiary referral hospital setting. One hundred consecutive operative cases of primary hyperparathyroidism (99 patients) undergoing both preoperative 4DCT and SeS. Localization studies were correlated with operative findings, histopathology and clinical outcomes. The utility of 4DCT was analysed in three common clinical settings: primary cases with positive SeS (Group A, n = 68), primary cases with negative SeS (Group B, n = 21) and re-operative cases (Group C, n = 11). RESULTS:The overall sensitivity of 4DCT was 92% compared with 70% for SeS. The sensitivity of 4DCT was superior to SeS in Groups B and C (76% versus 0% and 91% versus 46%, respectively). The overall cure rate was 98%, with 94% of cases completed as minimally invasive procedures. Up to 62% of Group B cases potentially avoided a bilateral neck exploration owing to a positive 4DCT. CONCLUSIONS:4DCT is an accurate technique providing both functional and anatomical localization of abnormal parathyroid glands. However, the advantage of speed and simplicity in image acquisition needs to be balanced against the small risk of increased radiation exposure in the younger patient group.
journal_name
ANZ J Surgjournal_title
ANZ journal of surgeryauthors
Brown SJ,Lee JC,Christie J,Maher R,Sidhu SB,Sywak MS,Delbridge LWdoi
10.1111/ans.12571subject
Has Abstractpub_date
2015-06-01 00:00:00pages
483-7issue
6eissn
1445-1433issn
1445-2197journal_volume
85pub_type
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