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Published on: 4/7/2025

What Could Cause a Lump on the Perineum in Males, and How Should It Be Treated?

A lump on the perineum in males can be caused by a benign tumor or a cyst, such as a dermoid cyst, and it should be checked by a doctor who may recommend monitoring or even removal if needed.

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Explanation

A lump in the perineum—the area between the scrotum and the anus—can occur for different reasons. It might be a benign tumor, which means a growth that is not harmful, or it could be a cyst, like a dermoid cyst. A dermoid cyst is a small sac that grows slowly and is filled with tissue that is not harmful. Sometimes the lump may be an unusual swelling that makes you or your doctor wonder whether further care is needed. When you find a lump in this sensitive area, your doctor will first examine it. They might feel the lump, ask you if it causes pain, and look for other signs like changes in size or shape. In some cases, the doctor may order an ultrasound or other tests to determine the nature of the lump. If the lump is not causing problems, it may be watched over time. However, if it causes discomfort, pain, or grows larger, the doctor might recommend removing it through a simple surgical procedure. It is important to have any new lump evaluated to make sure you get the right treatment.

(References)

  • Erpenbach K, Rothe H. Perineale Tumoren beim männlichen Patienten [Perineal tumors in male patients]. Urologe A. 1990 Nov;29(6):350-3. German. PMID: 2291263.

  • Parnham AS, Freeman A, Kirkham A, Muneer A. An unusual swelling in the male perineum. BMJ Case Rep. 2015 Jan 22;2015:bcr2014206199. doi: 10.1136/bcr-2014-206199. PMID: 25612751; PMCID: PMC4307079.

  • Sloan M, Fantus RJ, Paner GP, Faris S. Perineal dermoid cyst in a young male. Urol Case Rep. 2020 Jul 22;33:101358. doi: 10.1016/j.eucr.2020.101358. PMID: 33102057; PMCID: PMC7573956.

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