Temporary Back Lumps: Causes and When to Seek Help - Surgery

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Protrusion on the back


Hello, a few nights ago I noticed a lump on my back (near the scapula) that felt like a hard mass.
It was not painful or itchy, had no unusual color, had a smooth surface, and was movable.
However, by the time I woke up in the morning, it had naturally disappeared and became flat, and I couldn't feel it anymore.
This has happened about two or three times in the same manner.
I consulted a dermatologist who said it is neither a lipoma nor a cyst.
I would like to know what this issue might be or which specialist I should see.
Thank you.

Xiao Yu, 20~29 year old female. Ask Date: 2022/01/10

Dr. Chen Ronghong reply Surgery


Hello, Xiao Yu.
If it is a sebaceous cyst or a lipoma, it indeed will not disappear suddenly.
I suggest that when you feel it, have a family member use a marker to circle it on your skin for identification, and then seek medical attention.
You can visit a dermatologist, a surgeon, or a plastic surgeon.

Reply Date: 2022/01/10

More Info


Temporary lumps on the back, especially near the shoulder blades, can be concerning, but they are often benign and may not require immediate medical intervention. Based on your description, it seems that the lump you experienced was movable, painless, and smooth, which are characteristics that often suggest a benign condition. Here’s a deeper look into potential causes and when you should consider seeking further medical help.


Possible Causes
1. Muscle Spasms or Tension: Sometimes, what feels like a lump can actually be a muscle spasm or tightness in the surrounding muscles. This can occur due to poor posture, stress, or overuse of the muscles in that area. When the muscle relaxes, the lump may disappear.

2. Lipomas: Although your dermatologist ruled out lipomas (a benign tumor made of fat tissue), it’s worth noting that these can sometimes be soft and movable. However, they typically do not disappear overnight.

3. Cysts: While you mentioned that it’s not a cyst, it’s important to note that some cysts can be soft and movable. They may also fluctuate in size and can sometimes resolve on their own.

4. Lymph Nodes: Lymph nodes can become temporarily enlarged due to infections or inflammation. If you had any recent infections, this could explain the transient nature of the lump.

5. Fibromas or Other Benign Growths: These are also possibilities, although they usually do not disappear as quickly as you described.

6. Nerve Entrapment: Sometimes, nerve issues can cause localized swelling or lumps due to inflammation or irritation.


When to Seek Help
While the lump disappearing and being painless is a good sign, there are certain situations where you should consider seeking further medical evaluation:
- Persistent Symptoms: If the lump reappears frequently or if you notice any changes in size, shape, or consistency, it would be wise to consult a healthcare provider.


- Associated Symptoms: If you experience any new symptoms such as pain, redness, warmth, or fever, these could indicate an underlying issue that needs to be addressed.

- Changes in Mobility: If you notice any changes in your ability to move your shoulder or arm, or if you experience weakness, this could warrant further investigation.

- Concern for Malignancy: If you have a family history of cancer or if the lump changes in a way that raises concern, it’s always better to err on the side of caution and seek medical advice.


Recommended Specialists
Given that a dermatologist has already evaluated the lump, you might consider seeing a few other specialists if the issue persists:
- Orthopedic Specialist: They can evaluate for any musculoskeletal issues that might be causing the lump.


- Rheumatologist: If you suspect that the lump could be related to an autoimmune condition or systemic issue, a rheumatologist could provide insights.

- Neurologist: If you have any neurological symptoms associated with the lump, a neurologist could help assess nerve-related issues.

In conclusion, while the temporary lump you described is likely benign, it’s important to monitor your symptoms and consult a healthcare provider if you have any concerns or if the situation changes. Keeping a record of when the lumps appear and any associated activities or symptoms can also be helpful for your healthcare provider in making an accurate diagnosis.

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