Epididimal Cyst

  I was diagnosed with an epidimal cyst last year.  I am concerned about this cyst and if I need to have it checked every year.  Is there any special things I need to do to monitor this, AND can it later become testicular cancer.  Or will it just stay a cyst?  Is my testicular cancer risk greater since I have this?
  Thank you very much.

[HFHS M.D.-MS]

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Dear Dsmith et al
Thanks for your questions and patience.
Epididymal cysts are benign fluid filled structures with or without sperm in the epididymis. This is the tube that drains the testicles of sperm.  These lesions do not require extra follow up, but monthly self exams of the testicles are recommended for all men.
Malignant epididymal tumors are exceedingly rare.  Other types of solid tumors of the epididymis and paratesticular structures are the mesotheliomas and the cystadenoma.  Mesothelioma are usually seen in older individuals are mostly benign but metastasis has been documented in 15% of cases.  1/3 of men with cystadenomas have a von Hippel Lindau disease (a  disease with multi organ tumors).   Cyst of the epididymis that do transmit light are usually spermatoceles (dilated tubules filed with sperm). Periodic testicular exams keeps possible growth under check.  It is advised to see a doctor if there is any change in size or consistency.  
More individualized care is available at the Henry Ford Hospital and its urban campuses by calling  (1 800 653 6568). We can also arrange local accommodations through this number if this is your need. Please bring any physicians