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Effects of Parathyroidectomy Versus Observation on the Development of Vertebral Fractures in Mild Primary Hyperparathyroidism
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2015 (English)In: Journal of Clinical Endocrinology and Metabolism, ISSN 0021-972X, E-ISSN 1945-7197, Vol. 100, no 4, 1359-1367 p.Article in journal (Refereed) Published
Abstract [en]

Context: Mild primary hyperparathyroidism (PHPT) is a common disease especially in middle-aged and elderly women. The diagnosis is frequently made incidentally and treatment strategies are widely discussed. Objective: To study the effect of parathyroidectomy (PTX) compared with observation (OBS) on biochemistry, safety, bone mineral density (BMD), and new fractures. Design: Prospective, randomized controlled study (SIPH study), with a 5-year follow-up. Setting: The study was conducted at multicenter, tertiary referral centers. Patients: Of 191 randomized patients with mild PHPT, biochemical data were available for 145 patients after 5 years, with a mean age at inclusion of 62.8 years (OBS group, 9 males) and 62.1 years (PTX group, 10 males). Intervention: Parathyroidectomy vs observation. Main outcome measures: Biochemistry, BMD, and new radiographic vertebral fractures. Results: Serum-calcium and PTH-levels normalized after surgery and did not deteriorate by observation. BMD Z-scores were normal at inclusion in the lumbar spine (LS) and femoral neck (FN). For LS, BMD Z-scores were stable for 5 years with observation, but decreased in FN (P < .02). After surgery, BMDZ-scores increased significantly in both compartments (P < .02 for both), with a highly significant treatment effect of surgery compared to observation (P < .001). During follow-up, five new clinically unrecognized vertebral fractures were found in 5 females, all in the OBS group (P = .058). Conclusion: Even though new vertebral fractures occurred only in the observation group, the frequency was not significantly different from the surgery group. Longer follow-up is needed before firm conclusions can be drawn about the long-term safety of observation, as opposed to surgery.

Place, publisher, year, edition, pages
2015. Vol. 100, no 4, 1359-1367 p.
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Endocrinology and Diabetes
URN: urn:nbn:se:uu:diva-253266DOI: 10.1210/jc.2014-3441ISI: 000353361500042PubMedID: 25636048OAI: oai:DiVA.org:uu-253266DiVA: diva2:814318
Available from: 2015-05-26 Created: 2015-05-25 Last updated: 2015-05-26Bibliographically approved

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Hessman, Ola
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Endocrine Surgery
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