Recurring Foot Tumors: Causes and Dietary Solutions

A tumor has developed on the sole of the left foot?

Hello doctor, last year at the beginning of the year, I developed a tumor-sized hard lump on the sole of my left foot, about the size of a small toe.
After undergoing surgery, the removed tumor appeared as a whitish, round stone-like mass.
Less than six months after the surgery, another similar hard lump grew slightly above the previous surgical site.
On December 20, 2018, I underwent a second surgery.
After the procedure, the doctor informed me that this condition is called a plantar "epidermoid cyst." He mentioned that if it recurs, he would be at a loss for what to do.
However, after a slow recovery, around early January 2019, I felt another protrusion on the sole of my left foot, resembling the previous symptoms of a lump.
Although it is not painful, there is discomfort and a prickly sensation when pressure is applied to the surface, and the discomfort becomes more pronounced when running.
I returned to consult my original physician, but he was also unsure why the tumor would regrow after excision.
Could this whitish tumor be related to elevated uric acid levels? I previously had my uric acid checked, and it was evidently high.
Could this be the reason for the recurrence of the tumor? What methods can be employed to address this issue, or what dietary considerations should I be aware of?

Tai, 20~29 year old female. Ask Date: 2019/02/07

Dr. Shi Guozheng reply Orthopedics

If the crystals are uric acid crystals, they are called tophi, which appear as white, powdery crystals.
Your tumor may not be caused by high uric acid levels; if it were, the pathology report would indicate the presence of tophi.
If the tumor is currently small, it can be monitored for now.

Reply Date: 2019/02/07

More Info

The recurring foot tumors you are experiencing, specifically the epidermoid cysts, can be frustrating and concerning. These cysts are benign growths that can develop in the skin, often resulting from the accumulation of keratin, a protein found in skin cells. The fact that you have had multiple surgeries to remove these cysts, only to have them return, suggests that there may be underlying factors contributing to their recurrence.

Understanding the Causes
1. Genetic Predisposition: Some individuals may have a genetic tendency to develop epidermoid cysts. If there is a family history of similar skin conditions, this could be a contributing factor.

2. Skin Trauma: Repeated trauma or irritation to the skin can lead to the formation of cysts. If you are frequently putting pressure on the area where the cysts develop (for example, from footwear), this could exacerbate the problem.

3. Hormonal Factors: Hormonal changes can also influence the development of cysts. This is particularly relevant during puberty or other periods of hormonal fluctuation.

4. Diet and Metabolic Factors: While there is no direct link between high uric acid levels and the formation of epidermoid cysts, a diet high in purines (which can lead to elevated uric acid levels) may contribute to other skin conditions or systemic issues. However, it is essential to note that high uric acid levels are more commonly associated with gout and not directly with cyst formation.

Dietary Solutions and Recommendations
1. Hydration: Ensure you are drinking plenty of water. Staying hydrated can help your body flush out toxins and may assist in maintaining healthy skin.

2. Balanced Diet: Focus on a diet rich in fruits, vegetables, whole grains, and lean proteins. Foods high in antioxidants (like berries, nuts, and leafy greens) can support skin health.

3. Limit Purine-Rich Foods: Since you mentioned having high uric acid levels, it may be beneficial to limit foods that are high in purines, such as red meats, organ meats, and certain seafood. Instead, opt for low-purine alternatives like chicken, eggs, and dairy products.

4. Healthy Fats: Incorporate healthy fats into your diet, such as those found in avocados, olive oil, and fatty fish. These can help maintain skin elasticity and overall health.

5. Avoid Processed Foods: Processed foods often contain additives and preservatives that can negatively affect skin health. Try to minimize your intake of these foods.

Management and Treatment Options
1. Regular Monitoring: Since you have a history of recurrent cysts, regular follow-ups with your dermatologist or podiatrist are crucial. They can monitor the growths and provide timely interventions if necessary.

2. Surgical Options: If the cysts continue to recur and cause discomfort, discuss with your physician the possibility of more extensive surgical options. Sometimes, complete excision of the cyst wall is necessary to prevent recurrence.

3. Topical Treatments: While there are no specific topical treatments for epidermoid cysts, maintaining good skin hygiene and using non-comedogenic products can help prevent irritation.

4. Lifestyle Modifications: Consider wearing well-fitted shoes that do not put pressure on the affected areas. Avoid activities that may lead to trauma to the foot.

5. Consult a Specialist: If the cysts continue to be a problem, consider seeking a second opinion from a specialist in dermatology or podiatry who may have additional insights or treatment options.

In conclusion, while the recurrence of epidermoid cysts can be disheartening, understanding the potential causes and implementing dietary and lifestyle changes may help manage the condition. Regular consultations with healthcare professionals will ensure that you receive the best possible care tailored to your specific needs.

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