I just noticed these rounds of bumps behind my knees. This is the right knee. The left is the same. What is this? - Quora
![small bone/lump on left knee doesn't hurt but no one else i know has it just want to know if i should get it checked out or something : r/medical small bone/lump on left knee doesn't hurt but no one else i know has it just want to know if i should get it checked out or something : r/medical](https://i.redd.it/3ymuzjvmrzk41.jpg)
small bone/lump on left knee doesn't hurt but no one else i know has it just want to know if i should get it checked out or something : r/medical
![A 4-year-old boy (case 3). Photograph of the right knee demonstrates a... | Download Scientific Diagram A 4-year-old boy (case 3). Photograph of the right knee demonstrates a... | Download Scientific Diagram](https://www.researchgate.net/publication/286444317/figure/fig1/AS:941386350223369@1601455404216/A-4-year-old-boy-case-3-Photograph-of-the-right-knee-demonstrates-a-small-bump-along.gif)
A 4-year-old boy (case 3). Photograph of the right knee demonstrates a... | Download Scientific Diagram
![Wear debris pseudotumor following total knee arthroplasty: a case report | Journal of Medical Case Reports | Full Text Wear debris pseudotumor following total knee arthroplasty: a case report | Journal of Medical Case Reports | Full Text](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2F1752-1947-3-9304/MediaObjects/13256_2008_Article_927_Fig1_HTML.jpg)