骨质疏松症, 骨量和结构的丧失, is hastened by the sudden drop in estrogen levels that occurs as a woman enters 更年期, 要么自然, by surgical removal of the ovaries before age 45, or by premature 更年期 caused by breast cancer treatment. Estrogen protects the bones, so estrogen deficiency is a definite risk factor for osteoporosis.
Women who have had breast cancer or are considered at high risk for developing breast cancer generally receive a recommendation not to take hormone replacement therapy (HRT). Women with breast cancer, therefore, are at risk for developing osteoporosis.
骨质疏松症 is diagnosed with a bone mineral density (BMD) test. There are many ways to test for bone density, but most techniques use a specialized low-dose X-ray technique that measures the amount of bone present in different parts of the skeleton. Lower bone density is associated with greater risk for fractures. Your measurements are compared to women similar in age, weight, sex and ethnic background.
The test most commonly performed at UCSF Medical Center is the dual energy X-Ray absorptiometry (DXA), 哪种安全又不不舒服. The radiation exposure is less than one-tenth the dosage of a chest X-ray.
You will be asked to wear clothes without metal buttons, buckles, or zippers and no underwire bra. 测试是穿着衣服进行的. You will lie on a table and the scanning arm is moved slowly over the parts of the body to be scanned. You are not in a tunnel as with a magnetic resonance imaging (MRI) scan. 测试时间约为15 ~ 30分钟.
Your primary care physician or your physician in the 乳房护理中心 can order a bone mineral density test if you are at risk for or have symptoms of osteoporosis.
Testing might be discussed and considered in the following instances:
- You are postmenopausal and have one or more risks (besides 更年期) for fractures caused by osteoporosis
- You are postmenopausal and have had a fracture — testing would be done to confirm the diagnosis and rate disease severity
- You and your doctor are considering osteoporosis therapy and the BMD test results would help the decision making process
加州大学旧金山分校健康 medical specialists have reviewed this information. It is for educational purposes only and is not intended to replace the advice of your doctor or other health care provider. We encourage you to discuss any questions or concerns you may have with your provider.