Noticed a firm, stubborn lump on your toe or the top of your foot that aches when you walk? A giant cell tumor of the tendon sheath could be the cause — a benign growth that, despite its intimidating name, is not cancerous but can still cause real pain and interfere with how your foot moves. Clear answers about what this mass is, how it is diagnosed, what treatment looks like, and what recovery involves are all just ahead.
At Sweeney Foot & Ankle Specialists, Dr. D. Sean Sweeney, DPM, FACFAS, and Dr. Christy Leahey, DPM, FACFAS, bring more than 20 years of trusted podiatric expertise to every visit. Our award-winning practice has been voted Best Podiatrist in The Woodlands by Living Magazine every year since 2012.
What Is a Giant Cell Tumor?
A giant cell tumor of the tendon sheath is a benign, noncancerous soft-tissue mass that arises directly from a tendon. These firm, nodular lumps most often appear on the toes, top of the foot, or sides of the foot, though they can also develop deep within the foot. They enlarge slowly and rarely exceed 4 cm.
Symptoms and Why It Hurts
Pain is the most common reason patients seek care. Discomfort typically stems from:
- The mass presses firmly on the surrounding tissues
- Interference with the function of the attached tendon
- Pressure on the nearby bone, which can cause bone erosion over time
Because this bone erosion was once mistaken for cancerous invasion, giant cell tumors were historically thought to be malignant. We now know the erosion is due to pressure, not invasion.
How a Giant Cell Tumor Is Diagnosed
A definitive diagnosis is typically confirmed by a pathologist after the mass is removed. During your visit, our team reviews your history, examines the lump, and may order imaging. X-rays can reveal the shadow of the tumor and, in 10–20% of cases, show bone erosion. An MRI may be recommended to map the size and depth of the mass before surgery.
Treatment Options
The standard treatment is surgical excision. In some cases, a cortisone injection may be tried first to shrink the mass. Surgery is performed in an outpatient surgery center using local anesthesia with IV sedation or general anesthesia, depending on the tumor’s location. After careful dissection from surrounding tissues, the site is closed, and a compressive dressing — and sometimes a splint or below-the-knee cast — is applied.
Recovery and What to Expect
- Sutures stay in place for 10 to 14 days
- Keep the foot elevated above heart level and the bandage clean and dry
- Crutches may be needed for a few days up to three weeks
- Most patients need at least one week off work; light-duty roles may resume sooner
Possible complications include infection, swelling, delayed healing, tendon weakness, small patches of numbness in the skin, or recurrence — though most procedures are smooth and successful.
Why Choose Sweeney Foot & Ankle Specialists for Giant Cell Tumor Care in The Woodlands, TX?
Choosing your surgeon matters when soft tissue masses involve delicate tendons, nerves, and bone. Sweeney Foot & Ankle Specialists pairs decades of surgical expertise with leading-edge tools such as MLS laser therapy and in-office physical therapy to support a smoother, faster recovery after tumor removal.
Patients across The Woodlands, Magnolia, and Greater Houston trust us for our warm, patient-centered approach, prompt appointments for urgent concerns, and a 14-year streak as Best Podiatrist in The Woodlands. From accurate diagnosis to careful surgical technique and coordinated rehab, every step is built around your comfort and long-term mobility.
Take the Next Step Toward Relief
If a painful or growing lump on your foot is interfering with daily life, expert evaluation is the next step toward comfort and confidence. Sweeney Foot & Ankle Specialists offers compassionate, advanced foot and ankle care at two convenient locations. Reach our Woodlands office at (281) 292-4944 or our Magnolia office at (281) 789-4956 to schedule your consultation today.