How are you? A Ganglion Cyst is a bump or mass that forms under the skin. These form when tissues surrounding certain joints become inflamed and swell up with lubricating fluid. They can increase in size when the tissue is irritated and often can "disappear" spontaneously. The largest ganglions form behind the back of the knee, causing a sense of fullness or tightness and also referred to as Baker’s cyst. Ganglions are usually painless, but range of motion may be impaired. Flexing or bending the affected area can cause discomfort, as can continuing to perform the activity that caused the condition.
Some ganglions disappear without treatment, and some reappear despite treatment. Surgical removal of the cyst is the only mode of treatment. Other treatments are only symptomatic.
PCL injury usually manifests with knee pain, swelling, and decreased motion, popping inside the knee etc. I think in your case the larger ganglionic cyst which is located on the borders of the PCL , is compressing the nerves, there by causing the pain in the thigh.
I would suggest that you discuss with your doctor regarding the removal of cysts along with repair of meniscus.
All the best
There are natural remedies avaiable, one involving oregano oil, which I have been using for a few days on a wrist ganglion (few drops in coconut oil), seems to be receding and less painful.