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Q. There is a painless black growth on my knee. What could this be?

Answered by
Dr. Jyotisterna Mittal
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Aug 03, 2016 and last reviewed on: Jun 17, 2020

Hi doctor,

I am a 56 year old male. On the left knee, there is a painless black growth and that has been there for around 2 years now. In a recent visit, my doctor advised to use Lactic acid plus Salicylic acid based topical lotion. This reduced the size of the growth a little bit. However, after stopping the lotion for 15 days, it grew back to its original size again. But, it did not become bigger than before. I have attached the pictures for your reference. Could you please advice as what this could be? Also, what treatment would one need for this?

#

Hi,

Welcome to icliniq.com.

  • The growth is a viral wart. It is a form of superficial viral growth on the skin.
  • Yes, it usually increases in size if left untreated and can spread to other body parts by direct contact.
  • They are best dealt with radiocautery, which is a simple office based surgery done with a cautery machine. It is a five minute superficial procedure, which would be performed by your dermatologist. Only local anesthesia is required.
  • Do not touch the wart repeatedly as they may spread to other body parts.
  • The lotion mentioned by you may also be used for a long time, but it is not as efficacious as the surgical option.

For further doubts consult a dermatologist online --> https://www.icliniq.com/ask-a-doctor-online/dermatologist

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