Question I have a lump in my right buttock near where it joins the back of my thigh. It seems to grow overnight, then during the day subside somewhat. I have applied pressure to it and it seems to flatten out and reduce size. It is painful. I don't know if it is a lymph node or cyst or abscess. Not quite sure. From what I have read, this does not sound cancerous, but I am just a layman. I have tried to massage it out, however that results in more pain.
Answer If it is painful and subsides during the day, I would suspect you have a cyst. They are easily treated but can recur. You are right that this doesn't sound cancerous; it sounds like it is in the soft tissues where cancers rarely originate. the usual treatment is to evacuate the cyst with a needle; that allows the physician to get an idea of what is in it. If it recurs, minor surgery might be needed. Hope this helps.
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Publications New England Journal of Medicine
American Journal of Medicine
Journal of the American Society of Clinical Oncology
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Internal Medicine residency, St. Louis University School of Medicine, St. Louis, MO
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