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Conditions

Epididymal Cyst

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An epididymal cyst is a smooth, fluid-filled lump found on the testicles. Although some men may worry that they are a sign of cancer or another serious problem, epididymal cysts are in fact benign and thus not a health risk.

The cysts form when fluid builds up in a tube behind the testicles called the epididymis, which stores and transports sperm. It is possible to have more than one cyst at a time and they can appear on both testicles. Up to a third of men are affected by this condition and the cysts can develop at any time in life, although it is most likely to occur in those who are middle-aged.

Epididymal cysts can be very small, but some can grow to the same size as a testicle or even as large as a grapefruit! There are normally no symptoms unless a cyst becomes infected, in which case it may drain fluid and become painful or swollen. Larger epididymal cysts can cause some discomfort, which is usually the reason why some men opt to have them removed. This procedure involves a simple operation to cut the cyst out of the epididymis. However, if a cyst is not infected and does not cause any pain or discomfort, it is not necessary to treat it.

Although epididymal cysts are benign, it is still important to get any new or unusual lumps and bumps in your genital area checked out by a GP.

Watch the Live from the Clinic interactive case video on testicular cysts >

Comments and Questions

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I think a cyst only hurts during night as you may have unconditional sleeping positions I have been having one on my right testicle for the last 7years thought makes me wonder when I touch it.





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I've had mine for the last 5 years and is the size a a grape it hurts most of the time. I've went to the Dr and they kept saying it's an infection every time I went. Until a couple months ago they did the ultrasound and found the grape sized cyst on my right nut. I have to have surgery to remove. Anyone know long the recovery is for this surgery?





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I have read everywhere about "not worrying" or "no treatment needed" if the is no infection ... But my cyst is now very large and is stretching the scrotal sac. From time to time it also feels very heavy, which is probably normal given its size. My biggest worry is that if it bursts what happens to all the fluid and is their a large chance of infection or even the spread of any form of cancer.





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Im 17 and have had 3 Epididym cysts across both testes for a few years now. I am not sure if they are infected but every few months the left testicle inflames and the cysts grow in size. Whenever this happens it causes me unbearable pain, which i wpuld describe as excruciating. It is incredibly painful to even move. Ive just gone to hospital as this occurred again yesterday and hopefully surgery is being scheduled to remove them





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Hi, I have just this morning noticed that at the tip of my penis on the inside of the opening that one of the 'lips' is a different shape to the other and doesn't look smooth as the other. have you any idea what this may be? Thanks





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My bf has been recently diagnosed with an epidermal cyst. He was prescribed antibiotics for this although he said he was told it wasn't infected. Is this normal - as a lot of things I've looked up online say they would only treat if infected or causing so much bother that they needed to remove and he's told me that neither exist. Should I be concerned?





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I am 23 i have had two operation in my left testis due to it not normally descending to the scrotum. after the second surgery there have been pain and swelling like a cysts please help





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I have had this a couple of times before and each one was sorted out with an operation. It has now come back a third time and the GP referred me for an Ultrasound scan just to be sure. The ultrasound specialist confirmed it was an epididymal cyst during the scan and indicated it often happens if a man has a vasectomy. ANY lump should be checked-out with a visit to the GP, but don't be surprised if they shine a hand torch through the scrotum. If the lump shines 'like a light bulb' then it is likely to be a cyst which is uncomfortable but not life threatening.





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Hello! Now I am 27 years old. I had been suffering from cyst on my right side Epididymis from 2 years ago. I have 3.4*4:00 MM fluid cysts. It have been really uncomfortable in my daily life style. But Doctor had suggested to me no need worry about this cysts even Doctor didn't prescribed me any medicine as well. So in this case should I do surgery?Could please give me the some suitable suggestions! Will be appropriate





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I have some small bumps on my scrotum. I visted the hospital and the doctor said its cyst. I want to know the side effects of it.





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