"It's Too Small to Hurt": Why Tiny Lipomas Can Absolutely Cause Pain

I did an interesting little surgery today, and it's a case I want to talk about because I see this pattern constantly and patients get dismissed over it.

My patient had a very small lipoma that was causing her pain.

Before she got to me, she had seen several people, and the response was consistent:

• "This is too small."
• "It's not causing an issue for you."
• "Just do some physical therapy."

And she went and did that. But she continued to have pain.

This is the part I want to name plainly: lipomas, depending on where they are, can be genuinely quite painful. Size is not a reliable proxy for whether a lipoma is causing symptoms, and being told a mass is "too small to matter" doesn't make the pain stop.

We did this under local anesthesia, I simply numbed the area up and went in.

I found the tiny lipoma, exactly as expected. But directly underneath it was a nerve, running along her muscle, sitting precisely where the lipoma was.

That's the mechanism people miss. A small lipoma sitting on top of a nerve doesn't need to be large to be a problem, it just needs to be in the wrong place. A tiny mass pressing on the right nerve can hurt considerably more than a big one sitting harmlessly in fat.

Here's how I handle it when someone comes to me with a small lipoma and pain:

If the patient has:

• A small lipoma
• All the proper workup already done
• Doctors who don't think the lipoma could explain what's going on
• But the lipoma sits in the general vicinity of where the pain is

…then I always encourage them to remove it.

Two reasons, and I think the second one matters as much as the first:

1. These patients often feel better once the lipoma is out, and as in today's case, I usually find a culprit nerve nearby that explains why.
2. At the very worst, if the pain persists after removal, we've definitively ruled the lipoma out as the cause and can move on to investigating something else.

That second point is the one I'd emphasize to anyone hesitating. Removing a small lipoma under local anesthesia is a minor procedure. Living with unexplained pain while everyone shrugs at your imaging is not minor at all. Even a "negative" result is useful information you can act on.

For the record, these are removed by excision, taking the mass out with its capsule, which also lets us send it to pathology for confirmation. I've written separately about why excision beats liposuction or Kybella for lipomas, and for a small lipoma the incision is tiny anyway.

• Lipomas can absolutely cause pain, and small ones are no exception, it depends far more on location than size.
• The common explanation is a nerve sitting directly underneath the lipoma. I find this frequently in painful-lipoma patients.
• Being told "it's too small to be the problem" does not mean it isn't the problem.
• If your workup is complete and the lipoma is near where you hurt, removal is reasonable. It's typically a small procedure under local anesthesia.
• Even in the worst case, removal rules the lipoma out so you can look elsewhere with a clear answer.

If you've been living with a painful lump that keeps getting waved off, it's worth a conversation with someone willing to take it seriously.