2 doctors weighed in:
Swelling in the back of the knee, hurts some; how do you know if it isn't a clot?
2 doctors weighed in

Dr. J.Milo Sewards
Orthopedic Surgery
1 doctor agrees
In brief: Venous ultrasound
A mildly painful swelling in the back of the knee can be a cyst coming off of the joint (a baker's or popliteal cyst).
If you have other risk factors for a blood clot (smoking, history of cancer, family history of blood clots or a tendency to clot), then a venous ultrasound may be the best way to try to differentiate the two. Often a diagnosis of a popliteal cyst is made by location & size.

In brief: Venous ultrasound
A mildly painful swelling in the back of the knee can be a cyst coming off of the joint (a baker's or popliteal cyst).
If you have other risk factors for a blood clot (smoking, history of cancer, family history of blood clots or a tendency to clot), then a venous ultrasound may be the best way to try to differentiate the two. Often a diagnosis of a popliteal cyst is made by location & size.
Dr. J.Milo Sewards
Dr. J.Milo Sewards
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