Right medial knee soft tissue mass, assess for growth, change versus September 20, 2015, patient has no pain Redemonstrated is a circumscribed large oval superficial hypoechoic mass, predominantly cystic with debris within it and few septations without peripheral blood flow, measures 8.8 x 4.7 x 6.8 cm, mostly unchanged from prior study when it measured 9.9 x 3.4 x 6.2 cm given difference in technique and operator dependence. The lesion is located in the right medial knee soft tissue and appears indeterminate, less likely to be a evolving hematoma given no definite change in morphology or size.
Indeterminate right medial knee predominantly cystic soft tissue mass, mostly unchanged in size with new septation and debris within it. This is less likely to be a hematoma given no definite change in size. FNA can be helpful for further evaluation. 