Soft Tissue Growth Between the Buttocks and Anus

There is a growth in the perianal area between the tailbone and the anus?

Hello doctor, I discovered a long, fleshy growth in the area between my tailbone and anus during high school.
I'm not sure if it has been there since birth.
It doesn't hurt or itch, and it feels soft to the touch, similar to normal skin.
Due to friction, it appears a bit dark, but there is a small white area within this elongated growth.
Upon closer examination, it seems there is a small lump inside, but it usually doesn't cause any pain or discomfort.
However, sometimes if I sit for too long, it can feel slightly painful, but the discomfort goes away after a day or two.
I would like to ask if this growth could be a harmful tumor, or could it be related to poor sitting posture or pelvic misalignment? Thank you for your patience in listening!

Xiao Zhen, 20~29 year old female. Ask Date: 2016/08/01

Dr. Ke Fangxu reply Surgery

In general, such tumors are benign.
To determine their exact nature, a physician's examination or surgical removal is necessary.
If there is no continuous growth or symptoms such as redness, swelling, heat, or pain, observation for a period of time may be appropriate.
However, if any of these symptoms occur or if the condition affects daily life, surgical removal can be considered to eliminate the issue.

Reply Date: 2016/08/01

More Info

The growth of soft tissue, particularly in the area between the buttocks and anus, can be a source of concern for many individuals. Based on your description, it sounds like you have developed a soft, elongated mass in the gluteal cleft (the area between the buttocks) that is not painful and has been present for some time. Here’s a comprehensive understanding of what this could be, along with some insights into soft tissue growth in general.

Firstly, it’s important to note that soft tissue growths can vary widely in nature. They can be benign (non-cancerous) or malignant (cancerous), and they can arise from various tissues, including skin, fat, muscle, or connective tissue. Given that your mass is soft, non-painful, and has been stable over time, it is more likely to be a benign condition. Common benign growths in this area include lipomas (fatty tumors), epidermoid cysts, or even fibromas (fibrous tissue growths).

The presence of a small white area and a "meatball" sensation inside the mass could suggest a cystic structure, which is often filled with keratin or other materials. Cysts can develop due to blocked sebaceous glands or hair follicles and are generally harmless unless they become infected or inflamed.

Regarding your concern about whether this growth is a tumor or related to poor posture or pelvic alignment, it is unlikely that a benign growth like a lipoma or cyst is directly caused by sitting improperly or pelvic misalignment. However, poor posture can lead to other musculoskeletal issues, such as muscle strain or discomfort, which might explain the occasional pain you experience when sitting for prolonged periods.
If the mass has not changed in size, shape, or character over time, and if it does not cause significant discomfort, it may not require immediate intervention. However, it is always wise to monitor any growth for changes. If you notice any of the following, you should seek medical evaluation:
1. Rapid growth: If the mass increases in size quickly.

2. Pain: If it becomes painful or tender.

3. Changes in color or texture: If the skin over the mass changes or if the mass itself feels different.

4. Discharge: If there is any drainage or bleeding from the area.

A healthcare provider can perform a physical examination and may recommend imaging studies, such as an ultrasound, to better understand the nature of the mass. In some cases, a biopsy may be necessary to rule out any malignant processes.

In summary, while your description suggests a benign soft tissue growth, it is essential to remain vigilant and consult a healthcare professional for a thorough evaluation. They can provide a definitive diagnosis and discuss potential treatment options if necessary. Regular check-ups and being attentive to any changes in your body are key components of maintaining your health.

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