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Vertebral mineralization after parathyroidectomy: measurement by quantitative CT
E M Scalzetti1, E M Levinsohn, P Numann
1Department of Radiology, University Hospital, SUNY Health Science Center, Syracuse 13210.
AJR. American Journal of Roentgenology
|September 1, 1988
Summary
Parathyroidectomy temporarily increases vertebral bone mineral density in patients with primary hyperparathyroidism. However, this bone mineral improvement is not sustained long-term, decreasing within three years post-surgery.
Area of Science:
- Endocrinology
- Radiology
- Orthopedics
Background:
- Hyperparathyroidism is associated with reduced vertebral bone mineral density.
- The impact of parathyroidectomy on vertebral bone mineral concentration remains underreported.
Purpose of the Study:
- To investigate changes in vertebral bone mineralization after parathyroidectomy in women with primary hyperparathyroidism.
- To determine the duration of any observed improvements in bone mineral concentration.
Main Methods:
- Quantitative computed tomography (CT) was used to measure lumbar vertebral body mineralization.
- Measurements were taken pre-surgery and at 4 months post-surgery in five women.
- Follow-up measurements were obtained at 8 months and 20-33 months post-surgery in some patients.
Main Results:
- Four out of five patients showed increased vertebral mineralization at 4 months post-surgery (13% group increase, statistically significant).
- One patient demonstrated continued mineralization increase at 8 months.
- By 20-33 months post-surgery, bone mineral concentration decreased in all patients, falling below initial postoperative levels and sometimes below preoperative measurements.
Conclusions:
- Parathyroidectomy leads to a transient increase in vertebral trabecular bone mineralization in primary hyperparathyroidism.
- This bone mineral increase is not sustained and reverses within three years following surgery.