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Hello , its Dr Saleem here. Welcome to JA. I would like to answer your query.
Did you receive radiation for prostate Cancer ?
PSA is prostate specific antigen , a tumour marker used to monitor or detect any cancer of prostate. Post treatment it helps to monitor prostate condition. Radiotherapy doesnt kill all the cancer cells and so remaining cells keep producing PSA. Radiotherapy does not cause a quick drop in PSA levels due the same reason. Monitoring is essential to see the trend of PSA levels, if in two consecutive readings the levels are falling it means its alright and if there is any rise it calls for more frequent monitoring , meaning thereby a regrowth of cancerous cells.
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