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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes A Hard Lump On The Arm?

I am a 32year old female, I weigh 120lbs. I was seen 4yrs ago because of a discoloration(appeared to be broken blood vessels) they did a biopsy and found it to be nothing. The broken blood vessels went away and I had no problems until a few weeks ago my left arm went numb and when I rubbed it I noticed a hard lump the size of a gumball. It does not really bother me, I gave it a few weeks to see if it would go away...still no change
Wed, 25 Mar 2015
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Pathologist and Microbiologist,  's  Response
Hi! thanks for your health query on HCM!

Well, you have a significant medical history behind the hard lump on the lump. You had broken vessels that healed itself; you have numb left arm; and the lump appeared after you rubbed the numb area; it does not seem to reduce...
I must consider following possibilities in this case:

1. post traumatic neuroma-like benign nerve tumor

2. inflammatory stromal nodule

3. neurofibroma or schwannoma

4. parasitic cyst

5. aneurysm or vascular malformation

You need a doppler/ultrasound study for confirmation, in addition to a clinical examination; therefore please see your doctor but nothing to worry really!

regards,
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What Causes A Hard Lump On The Arm?

Hi! thanks for your health query on HCM! Well, you have a significant medical history behind the hard lump on the lump. You had broken vessels that healed itself; you have numb left arm; and the lump appeared after you rubbed the numb area; it does not seem to reduce... I must consider following possibilities in this case: 1. post traumatic neuroma-like benign nerve tumor 2. inflammatory stromal nodule 3. neurofibroma or schwannoma 4. parasitic cyst 5. aneurysm or vascular malformation You need a doppler/ultrasound study for confirmation, in addition to a clinical examination; therefore please see your doctor but nothing to worry really! regards,