Thank you. I got a call from my mom because she has been experiencing pain behind her knee. When I went to assess, there was swelling and hardness that covered about 3 x2 behind the knee. (Hard upon pulsation) It did not feel like the hardness had an exact shape or form, (like a bakers cyst) Now, there was about a half inch line of what resembled a bruise. Almost reminded me of varicose vein, but this just appeared 3 days ago. She was hoping it would go away, but there is a bit of redness around the bruised line area. She was feeling like something had bitten her, but its hard to tell. Any suggestions that could explain the sudden hardness, and pain? I assessed for DVT by having her flex foot and checking for pain in calf, but I m not sure at all what it could be. She was diagnosed with diabetes 1 year ago, and is diet controlled.