GU radiation oncologists consensus on bone loss from androgen deprivation.

Can J Urol 2006 Feb;13(1):2962-6

BC Cancer Agency, Vancouver, British Columbia, Canada.

The majority of GU radiation oncologists in Canada attended a consensus meeting in November 2004. The topic of osteoporosis in men receiving androgen deprivation therapy (ADT) for prostate cancer was identified as a key theme. A chaired session with keynote speakers and review of the evidence took place followed by open debate. Participants were provided with background information. Osteoporosis was defined as a T-score < or = -2.5, but the importance of risk factors and clinical findings is noted. Dual DEXA is the current standard for assessment of bone density and relates well to fracture risk. The lifetime risk of fracture is 13% for men over the age of 50 years even without the influence of ADT. Lifestyle, dietary and supplementation advice are provided both to prevent and to manage osteoporosis. The role for prophylactic bisphosphonate therapy in men on ADT without osteoporosis has not been established. Follow-up DEXA scans are required to monitor density, risk and response to interventions. Fracture incidence and BMD should be considered in the trial design of studies involving prolonged ADT. Osteoporosis is a treatable condition and the oncologist should employ ADT with this knowledge. A follow-up e-mail survey was carried out regarding the consensus statement. Responses were received from 49 of the 69 attendees (71%), and overall there was an 89% agreement with the consensus statement. This is now adopted as national practice guidelines for radiation oncologists employed prolonged ADT in prostate cancer patients.

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February 2006
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