Lipomas and Cysts: Should You Worry About These Leg Bumps? - Family Medicine

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Protrusion, different?


I have a relative with a "lipoma," but she hasn't had it treated.
Recently, I discovered a similar-sized lump on my leg, which is a "cyst." Whenever we are together, our elders urge us to have them surgically removed, worried that they might grow larger and cause problems.
The doctor we consulted didn't have much time to explain; they just confirmed the diagnosis, and we have been relying on online information for everything else, including why these occur and how to manage them.
It seems that as long as these two conditions don't grow large enough to affect our daily lives, they can be left alone.
Our elders see that we both have lumps on our legs and share a blood relation, so they believe it might be hereditary, but we are the only two with this issue, and the diagnoses are different.
If our elders insist that we should have them removed, which is considered more serious: "lipoma" or "cyst"? Thank you.

Niming, 20~29 year old female. Ask Date: 2016/08/14

Dr. Wu Fangcan reply Family Medicine


According to the description: Generally, lipomas are not solitary and consist of fat.
The cyst on the foot is singular and contains fluid.
Lipomas are more likely to be related to genetics and may recur after removal; cysts are less likely to be hereditary and should not grow back if excision is successful.
It is advisable to consult a surgeon for further details.
Thank you.

Reply Date: 2016/08/14

More Info


When it comes to skin lumps such as lipomas and cysts, it's essential to understand their nature, potential implications, and management options. Both lipomas and cysts are relatively common benign growths, but they differ in composition, behavior, and treatment considerations.

Lipomas are soft, fatty tumors that typically develop just under the skin. They are generally painless, slow-growing, and can vary in size. Lipomas are composed of adipose (fat) tissue and are usually movable when palpated. While they are benign and do not pose a significant health risk, they can be bothersome due to their appearance or if they press on nearby structures. Surgical removal is often recommended if the lipoma becomes painful, grows rapidly, or if the individual desires cosmetic improvement.

On the other hand, cysts are closed sacs filled with fluid, air, or other substances. The most common type of cyst is the epidermoid cyst, which forms when skin cells multiply and become trapped beneath the skin. Cysts can also be painless but may become inflamed or infected, leading to discomfort and the need for medical intervention. If a cyst becomes infected, it may require drainage or surgical removal, especially if it causes significant pain or has a risk of recurrence.

Regarding your concern about hereditary factors, while there may be a genetic predisposition to developing certain types of skin lesions, the presence of a lipoma in one family member does not necessarily mean that another will develop the same condition. The fact that you and your relative have different types of growths (lipoma vs. cyst) suggests that while there may be some genetic factors at play, they are not directly correlated.

In terms of management, if neither the lipoma nor the cyst is causing pain or affecting your quality of life, it is generally acceptable to monitor them. Regular check-ups with a healthcare provider can help ensure that any changes in size, shape, or symptoms are addressed promptly. If either growth begins to change or cause discomfort, further evaluation may be warranted.

As for the concerns raised by your relatives about the potential for these growths to become more serious, it is important to note that both lipomas and cysts are typically benign. However, any sudden changes in size, shape, or associated symptoms (such as pain or redness) should prompt a visit to a healthcare professional for evaluation.
In conclusion, while both lipomas and cysts are generally not serious, they can sometimes require intervention if they become symptomatic. It is advisable to maintain regular check-ups with a healthcare provider to monitor these growths and address any concerns that may arise. If surgery is suggested, it is usually a straightforward procedure, and the risks are minimal compared to the potential benefits of alleviating discomfort or cosmetic concerns. Always consult with a qualified healthcare professional for personalized advice and treatment options.

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