I have a long lump in the lumbar region ...

Hello my name is Mayara I'm 18 years old, I have a lump in the lower back almost close to my butt, hard, about three years, I'm scared, I do not have time to go to the doctor what can it be?
Expert answer:

It may be a sebaceous cyst, a lump of fat or fibrosis, but to make sure it's only by going to the doctor, if it's the same size all this time should be something benign.

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