Ask An Expert: Testicular Cyst and Cancer

Content provided by the Faculty of the Harvard Medical School

Ask An Expert: Testicular Cyst and Cancer

Question:

Can a testicular cyst in any way turn into cancer?

Answer:

It's unusual to have a cyst within the testicle itself. Any unusual growth within the testicle should be investigated carefully to make sure that it is not cancerous.

That said, it's common to find cysts within the epididymis, a tube-like structure that's attached to the testicle. These cysts are also known as spermatoceles, since they grow out of the tubes that carry sperm away from the testicles. Cysts in the sperm tubules (epididymis and vas deferens) are virtually always benign. They do not need monitoring for cancer, and do not require treatment unless they grow very large or become painful.

If you discover a new lump in the testicle or scrotum, be sure to see your doctor. He or she may be able to diagnose the problem simply by examining you. If the lump is not obviously benign, an ultrasound scan is the best way to determine the location and cause of the growth.

James S. Winshall, M.D., is an associate physician at Brigham and Women's Hospital. In addition to his role as senior editor at Harvard Health Publications, Dr. Winshall practices general internal medicine and is an assistant professor at Harvard Medical School.

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Last updated:	January 24, 2007

Medical content reviewed by the Faculty of the Harvard Medical School. Harvard Health Publications, Copyright © 2007 by President and Fellows of Harvard College. All rights reserved. Used with permission of StayWell.

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