Lipomas: Causes, Concerns, and Surgical Timing - Oncology

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Regarding lipomas?


About a year ago, I suddenly noticed a small lump on my left thigh.
At that time, it was painless and itch-free, so I didn't see a doctor.
However, in early February of this year, I noticed that it seemed to have grown significantly larger than last year, with a noticeable bulge on the skin's surface.
It only started to feel slightly painful when pressed.
I quickly sought medical attention, but the doctor did not perform an ultrasound or any imaging studies (only a physical examination) and suggested it was likely a lipoma.
Surgery has been scheduled for the end of March.
Since this is my first experience with such a situation, I can't help but feel a bit anxious, fearing that this lump might be malignant.

What exactly causes lipomas? Is it unusual for someone my age to develop such growths, and could it be related to my diet or other factors? Additionally, is waiting over a month for surgery too long? Could there be any adverse effects (such as worsening)? Is it true that the sooner the surgery, the better? Thank you!

Danny, 20~29 year old female. Ask Date: 2001/02/09

Dr. Yang Youhua reply Oncology


Most lipomas are benign.
They can be surgically removed if they cause pain due to pressure symptoms or affect appearance.
Your overall health condition seems to be quite good, so there is no need for excessive worry.

Reply Date: 2001/02/09

More Info


Lipomas are benign tumors composed of adipose (fat) tissue. They are typically soft, movable, and painless, and they can occur anywhere on the body. While the exact cause of lipomas is not fully understood, several factors may contribute to their development. Genetics plays a significant role, as lipomas can run in families. Other potential factors include obesity, certain medical conditions, and trauma, although the latter is less clearly linked.

In your case, the sudden appearance of a lump on your thigh that has grown and become painful warrants attention. While lipomas are generally harmless, any changes in size, shape, or sensation should be evaluated by a healthcare professional. The fact that your doctor did not perform imaging studies like an ultrasound may be concerning, as imaging can help differentiate between a lipoma and other types of masses, including malignant tumors.
Regarding your concerns about the timing of your surgery, it is understandable to feel anxious, especially when dealing with a new growth. While lipomas are usually not urgent surgical cases, waiting for a month for surgery is generally acceptable unless there are significant changes in the lump or concerning symptoms arise. If the lump continues to grow, becomes increasingly painful, or if you notice any other unusual symptoms, it would be prudent to contact your healthcare provider for further evaluation.

As for the relationship between diet and the development of lipomas, there is no strong evidence to suggest that specific dietary habits directly cause lipomas. However, maintaining a healthy lifestyle, including a balanced diet and regular exercise, can help manage overall body fat and may reduce the likelihood of developing additional lipomas.
In terms of surgical intervention, the decision to remove a lipoma is often based on factors such as size, location, and symptoms. If a lipoma is causing discomfort or is cosmetically unappealing, surgical removal is typically recommended. The surgery is usually straightforward and performed under local anesthesia, with a low risk of complications.
Post-surgery, it is essential to follow your doctor's instructions for care and monitoring. While lipomas are benign, there is a small chance of recurrence after removal. Regular follow-ups with your healthcare provider can help ensure that any new growths are monitored appropriately.

In summary, while lipomas are generally benign and not a cause for alarm, it is crucial to remain vigilant about any changes in your body. If you have concerns about the lump on your thigh or the timing of your surgery, do not hesitate to seek a second opinion or further clarification from your healthcare provider. Staying informed and proactive about your health is the best approach to managing any medical condition.

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