I'm not sure if it's surgically related... but, I suppose that that's a possibility.
What I know is that sometimes, when Cancer patient's undergo treatments like radiation and/ or chemotherapy that is targeted around the abdominal or groin area, the inguinal lymph nodes can be adversely affected. The affected lymph nodes leak... and, that leakage can then migrate down to legs and feet... thereby, causing excessive and painful bloating of the lower extremities, i.e. legs and feet.
This condition is called Lymphedema and, it's unfortunately one of those negative after-effects of Cancer treatments.
So, in answer to your first question, yes... my guess is that the swelling is related to the inguinal lymph nodes. But, based on what my mother's oncologist told me, that swelling never completely goes away. So, I don't know if there is a way to treat or, at least, minimize it. The reason why I asked if you had radiation is because it's usually radiation or a combination of radiation and chemo that causes Lymphedema.
Hello. No, I didn't have radiation therapy. Just chemo.
I have a hunch what it is...
but, before I say, may I please ask if you also had radiation therapy?