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Doctor insights on: Radiation Therapy And Blood Donation

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What does it mean when blood comes out of my penis. I had radiation therapy prior to removal of cancerous prostate and bladder.

What does it mean when blood comes out of my penis. I had radiation therapy prior to removal of cancerous prostate and bladder.

Get it evaluated: After radiation some local irritation is present in tissues near prostate location, including bladder, urethra or rectum. If you are on blood thinners, sometimes blood is seen in urine or rectum. Often transient or self limited. However, blood in urine can be sign of other bad things like bladder tumor, or other conditions like one passing a kidney stone etc. Get it evaluated. ...Read more

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Gamma Rays (Definition)

This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay. Gamma rays form the background of normal radiation in which we all live; it is substantially greater than the exposure we get from imaging scans or should get from ...Read more


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Is is true that after 5 yrs from radiation therapy for prostate it's normal to test positive for blood in urine. 2 drs tole that?

Is is true that after 5 yrs from radiation therapy for prostate it's normal to test positive for blood in urine. 2 drs tole that?

Yes.: One of the side effects of external beam radiation (ebrt) for prostate cancer is radiation cystitis, or bladder inflammation years after initial treatment. This can present as mild to severe bleeding in the urinary tract. This bleeding should not be ignored, however, and should be evaluated to make sure there is not another cause for bleeding. Seek evaluation from a urologist. ...Read more

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Urine tested positive for blood said its normal for patients that had radiation therapy for prostate cancer also are ther any cancer cells in urine bl?

Urine tested positive for blood said its normal for patients that had radiation therapy for prostate cancer also are ther any cancer cells in urine bl?

Possibly: Radiation therapy can cause inflammatory changes in the bladder which can result in microscopic blood in the urine. However a urine cytology should be performed to rule out possibly bladder abnormalities. Additionally, if the history of radiation therapy is in the past, then a cystoscopy (camera to look in your urethra and bladder) may be warranted. Please discuss further with your doctors. ...Read more

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Doesn't radiation therapy increase cancer cell growth?

Doesn't radiation therapy increase cancer cell growth?

Not really: When given appropiately, radiation helps with local control. Keeping the tumor from recurring where it started). But yes exposure to radiation can be a cause for second cancers-( tho rare) most commonly sarcomas in the area of the radiated tissue). ...Read more

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Is there a reason I can't take antioxidants while i'm getting radiation therapy?

Is there a reason I can't take antioxidants while i'm getting radiation therapy?

Yes: Radiation takes advantage of free radicals formed in the field of radiation to cause dna damage targeted at cancer cells. Antioxidants are free radical scavengers, so they can potentially reduce the effectiveness of radiation treatments. It is best to avoid mega doses of antioxidants in the diet during and up to 6 weeks after radiation treatments. ...Read more

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Why can't my father be around my children while he's having radiation therapy for his prostate?

Why can't my father be around my children while he's having radiation therapy for his prostate?

Seeds /y radioactive: Radioactive seed implant of prostate makes your father slightly radioactive for about 6 months when the amount of radioactivity has decreased significantly. Children have young organs prone to injury from radiation. Other forms of radiation like external beam radiation, imrt, igrt, cyberknife, high-dose-rate brachy therapy do not make your father radioactive. No risk to be around children. ...Read more

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Is there a point at which radiation therapy for cancer doesn't help enough to make the side effects worth it?

Is there a point at which radiation therapy for cancer doesn't help enough to make the side effects worth it?

Yes.: You don't always know if a treatment is going to work on a patient. If the cancer is too advanced and there is little hope of helping the patient the doctor needs to tell a patient and their family so they can consider hospice or comfort measures. Many times radiation actually is a comfort measure and given so their is no side effect but relief of the symptoms. ...Read more

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Is nuclear medicine considered internal radiation therapy? For some reason, it seems like all the definitions of internal radi don't include nuclear.

Yes: Nuclear Medicine includes tests such as PET and other scans that can assess tumors & evaluate the function of various organs. It also includes giving radioisotopes by mouth or vein for the treatment of certain cancers (most commonly thyroid, lymphoma and bone mets) and hyperthyroidism. This is different than brachytherapy done by Radiation Oncologists in which radioactive seeds are put in a tumor ...Read more

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For what reason aren't patients shielded when they are receiving radiation therapy?

Shields are built in: Radiation therapy machines have the shields built in to them. These shape the radiation to fit the area of the body that needs to be treated and protects the rest. Additionally, it takes many inches if lead to block the radiation used for external beam treatment and a person cannot wear a shield thick enough to block the beam. ...Read more

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I had my prostate taken out my psa rose now a i'm due to have radiation therapy what are they going to radiate i don't have a prostate?

To the bed of ...: Your condition is rising psa after definitive rx with radical prostate removal, which is relatively common in up to almost 1/3 after such surgery. The plan to radiate is termed as salvage radiation under assumption of local recurrence after updated imaging study shows no suspicion for metastasis. But no spread as reported in imaging studies doesn't mean absolutely no microscopic metastasis. ...Read more

Dr. Donald Alves
338 doctors shared insights

Blood Donation (Definition)

Blood donation is the act of giving ones blood to a blood bank, so that it may be used in the future to help someone else. People with transmissible viral diseases, such as HIV or hepatitis C, are not able to donate blood, as ...Read more


Dr. Bahman Daneshfar
281 doctors shared insights

Radiation Therapy (Definition)

Radiation therapy is a common cancer treatment with the potential to have harmful side effects on a ...Read more