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Radiation therapy is commonly used in prostate cancer treatment. It may be used instead of surgery or after surgery in early-stage prostate cancer (adjuvant radiotherapy). Radiation treatments also can be combined with hormonal therapy for intermediate risk disease, when surgery or radiation therapy alone is less likely to cure the cancer.
The estrogen diethylstilbestrol (DES) is occasionally used to treat prostate cancer through suppression of testosterone production. It was previously used in the treatment of breast cancer, but has been replaced by more effective and less toxic agents. Estrace is an estrogen which was also formerly used for antiandrogen therapy of prostate ...
Oral HDE for prostate cancer with diethylstilbestrol was used widely in men with prostate cancer until the mid-1960s, when it was compared directly to orchiectomy and was associated with improved cancer-related mortality but worse overall survival, mainly due to previously unrecognized cardiovascular side effects.
It is used in hormone therapy for menopausal symptoms and low estrogen levels, hormone therapy for transgender people, and in hormonal birth control. [5] [4] [13] [14] It is also used in the treatment of prostate cancer. [13] The medication is taken by mouth or by injection into muscle or fat once every 1 to 4 weeks. [13] [14]
This systemic therapy (chemotherapy, immunotherapy or hormone therapy) or radiation therapy is commonly used in cancers that are locally advanced, and clinicians plan an operation at a later stage, such as pancreatic cancer. The use of such therapy can effectively reduce the difficulty and morbidity of more extensive procedures. The use of ...
Staging breast cancer is the initial step to help physicians determine the most appropriate course of treatment. As of 2016, guidelines incorporated biologic factors, such as tumor grade, cellular proliferation rate, estrogen and progesterone receptor expression, human epidermal growth factor 2 (HER2) expression, and gene expression profiling into the staging system.
Prostate cancer is the most diagnosed cancer in men in over half of the world's countries, and the leading cause of cancer death in men in around a quarter of countries. [91] Prostate cancer is rare in those under 40 years old, [92] and most cases occur in those over 60 years, [2] with the average person diagnosed at 67. [93]
Side effects are dose-dependent; for example, higher doses of head and neck radiation can be associated with cardiovascular complications, thyroid dysfunction, and pituitary axis dysfunction. [15] Modern radiation therapy aims to reduce side effects to a minimum and to help the patient understand and deal with side effects that are unavoidable.