Radiation therapy uses high-dose X-rays or other types of radiation to destroy bladder cancer cells.放射治疗使用高剂量的X射线或其他类型的辐射破坏膀胱癌细胞。 It may be used alone, before surgery to shrink the cancer, or after surgery to destroy any remaining cancer cells.它可单独使用，在手术前缩小肿瘤，或是手术后销毁剩余的癌细胞。 Radiation therapy may also be used if a person with bladder cancer cannot have surgery.放射治疗也可用于如果一个人膀胱癌无法手术。

External beam radiation comes from a machine outside the body.体外辐射来自于一台机器以外的机构。 The machine aims radiation at the cancer area.这台机器的目标是辐射在癌症领域。 Most people who receive external beam radiation therapy for bladder cancer are treated 5 days a week for 6 to 7 weeks as an outpatient.大多数人谁收到体外放射治疗膀胱癌的治疗每周5天的6至7周作为一个门诊。

Internal (interstitial) radiation therapy (brachytherapy) uses radioactive material contained in tiny tubes, wires, or beads.内部（间）放射治疗（放疗）使用载有放射性物质的微型管，电线，或珠子。 These are surgically placed in or near the tumor.这些都是手术中或附近的肿瘤。

What To Expect After Treatment哪些期待治疗后

Radiation therapy for bladder cancer often causes fatigue.放射治疗膀胱癌往往造成疲劳。 You may also have problems with nausea, vomiting, diarrhea, or urinary discomfort.您也可能有问题，恶心，呕吐，腹泻，或尿不适。 Home treatment and medication may help relieve these side effects.家庭治疗和药物治疗可以帮助减轻这些副作用。

Both men and women may have sexual problems following radiation therapy for bladder cancer.男性和女性可能有以下问题性放射治疗膀胱癌。 Women may experience vaginal dryness, and men may experience erection problems.妇女可能会遇到阴道干燥，男子可能会遇到勃起问题。

Why It Is Done为什么它是这样做

Radiation therapy destroys cancerous cells.放射治疗破坏癌细胞。 It is commonly used with surgery to prevent bladder cancer from coming back (recurring).这是常用的手术，以防止膀胱癌从回来（经常性） 。 It is also a treatment choice if surgery is not recommended for another medical reason.这也是一种治疗的选择，如果手术不建议再医疗的原因。 Radiation can also be used to treat symptoms such as pain in advanced bladder cancer.辐射还可以用来治疗症状，如疼痛，晚期膀胱癌。

How Well It Works以及它如何运作

Radiation therapy helps prevent recurrence of bladder cancer.放射治疗有助于防止复发的膀胱癌。 It is more effective when it is used in combination with chemotherapy than when it is used alone. ¹这是更有效地使用时，结合化疗时，多是单独使用。 ^一日

Risks风险

Radiation therapy may cause a decrease in your white blood cells (leukopenia), which increases your risk of developing an infection.放射治疗可能会导致降低您的白血细胞（白细胞） ，从而增加您的风险，发展中国家感染。 Your doctor will monitor your blood counts regularly and may change your treatment schedule until your white blood cell count returns to normal.您的医生将监控您的血球计数定期和可能改变您的治疗时间，直到您的白细胞计数恢复正常。 You may also have side effects from radiation, such as:您可能也有副作用辐射，如：

• Nausea.恶心。
• Vomiting.呕吐等症状。
• Diarrhea.腹泻。
• Pain or discomfort when urinating.疼痛或不舒服时，小便。
• Bladder inflammation and scarring (radiation cystitis).膀胱炎症和疤痕（放射性膀胱炎） 。

Home treatment and medication may help relieve these side effects.家庭治疗和药物治疗可以帮助减轻这些副作用。

What To Think About什么思考

Radiation therapy can cause scar tissue in the treated area.放射治疗可引起瘢痕组织中的治疗领域。 If cancer progresses after radiation therapy, the scar tissue can make surgery more complicated. ¹如果进展癌症放射治疗后的疤痕可以手术变得更加复杂。 ^一日

External radiation may darken your skin color, and the change may be permanent.对外辐射可能会变暗你的皮肤颜色和变化可能是永久性的。 You may also lose your hair in the treated area, but usually it grows back.您也可以失去你的头发在治疗领域，但通常生长回来。

Complete the special treatment information form (PDF) 完成特殊待遇信息表（ PDF格式） (What is a PDF document?) to help you understand this treatment. （什么是PDF文件？ ） ，以帮助您理解这一待遇。

Citations引文

1. Raghavan D (2003).拉加D类（ 2003年） 。 Bladder, renal, and testicular cancer.膀胱，肾，以及睾丸癌。 In DC Dale, DD Federman, eds., Scientific American Medicine , section 12, chap.在DC戴尔，日费德曼合编。 ， 美国医学科学 ，第12条，第一章。 14. 14 。 New York: WebMD.纽约：中央社。