Lumps Near the Tailbone: What Could They Be? - Oncology

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There is a lump in the lower back?


While massaging my mother, I noticed that in the lower back area, near the coccyx, there are one or two lumps on the right side that feel like they move around when I touch them.
What could these be?

Xiao Ju, 20~29 year old female. Ask Date: 2007/10/07

Dr. Fan Sheng reply Oncology


Little Orange: I don't dare to make any guesses.
Please take your mother to see a doctor.
Thank you!

Reply Date: 2007/10/07

More Info


When you discover lumps near the tailbone, it can be concerning, especially if they seem to move or slide when you touch them. There are several potential explanations for these lumps, and understanding their nature is crucial for determining the appropriate course of action.

1. Cysts: One common cause of lumps near the tailbone is the presence of cysts, particularly pilonidal cysts. These are fluid-filled sacs that can develop in the skin near the tailbone and may become infected, leading to pain and discomfort. Pilonidal cysts are often associated with hair and can occur in individuals who sit for prolonged periods.

2. Lipomas: Another possibility is a lipoma, which is a benign tumor made of fatty tissue. Lipomas are usually soft, movable, and painless. They can occur anywhere in the body, including near the tailbone, and are generally harmless unless they cause discomfort or grow significantly.

3. Bony Prominence: Sometimes, what you feel may simply be a normal anatomical feature, such as a bony prominence or the sacrum itself. The sacrum is a triangular bone at the base of the spine, and its shape can sometimes create the sensation of lumps or bumps, especially in individuals with less body fat.

4. Infections or Abscesses: If the lumps are tender, red, or warm to the touch, they could indicate an infection or abscess. Infections can occur in the skin or deeper tissues and may require medical intervention, including drainage or antibiotics.

5. Tumors: While less common, tumors (both benign and malignant) can also present as lumps near the tailbone. If there are any concerning symptoms, such as significant pain, changes in bowel or bladder function, or unexplained weight loss, it is essential to seek medical evaluation.


What to Do Next
Given the range of possibilities, it is advisable to consult a healthcare professional for a thorough evaluation. A doctor may perform a physical examination and, if necessary, imaging studies such as an ultrasound or MRI to better understand the nature of the lumps.

Management and Treatment
- Observation: If the lumps are not causing any pain or discomfort and do not change in size, a doctor may recommend simply monitoring them.

- Surgical Removal: If the lumps are diagnosed as cysts or lipomas and are bothersome, surgical removal may be an option.

- Medication: If an infection is present, appropriate antibiotics or drainage may be necessary.


Conclusion
In summary, lumps near the tailbone can arise from various causes, including cysts, lipomas, anatomical variations, infections, or tumors. It is essential to have these lumps evaluated by a healthcare professional to determine their nature and appropriate management. Early diagnosis and treatment can prevent complications and alleviate any discomfort your mother may be experiencing.

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