Subcutaneous hematoma ( RID4705 ) I withheld history to prove that history is important. Mimics a tumor. Last image is of her ankle at same ER visit. R/O fracture. No knee mass until a fall, while intoxicated, 9 days ago. There is a chronic infarct in the tibia as well as a scarred deltoid ligament. As the ER doc said, This aint her first rodeo.