J.Jpn. Surg. Soc.. 91(4): 500-507, 1990

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Original article

BONE METABOLISM IN THYROIDECTOMIZED PATIENTS
ーEVALUATION OF BONE MINERAL CONTENT BY QUANTITATIVE CTー

The bone mineral content in the patients who had undergone operation for thyroid carcinoma was measured by quantitative CT. Thirty-eight cases were enrolled as the subjects. All cases were papillary adenocarcinoma of the thyroid. The totally thyroidectomized group consisted of 3 males and 14 females, and the non-tatally thyroidectomized group (post-lobectomy) 3 males and 18 females. Thirty-eight healthy males and females were assigned to the control group. For evaluation of bone mineral content, quantitative CT was used and bone mineral content in the patient's lumbar vertebrae was measured. Concurrently, bone metabolic parameter in serum was　determined. No significant difference was observed in the mean bone mineral content among the above three groups.
To make correction by sex and age, BMC-index was defined as the value that the bone mineral content in each case was divided by the standard mean by the same age and sex. No significant difference was observed in BMC-index among the above three groups. No significant correlation was observed in serum calcitonin level with the bone mineral content and BMC-index. It suggests that no infiuence is exerted on bone metabolism if serum calcitonin is maintained in the physiological level.

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