My OH with PMR and possibly GCA has a large sausage shaped bursitis/synovitis (I'm not actually sure what the difference is) in his groin/thigh. Found with ultrasound scan. Thought it was a completely separate thing to PMR/GCA, although it appeared (started hurting) about a week before the PMR symptoms in shoulders arms & hips. Is it related? There's a comment in the "Living with PMR-GCA" handbook about it taking longer for bursitis/synovitis to fade..
My questions are: What exactly is it/are they, and how/why do they appear? Are they part of PMR, GCA or both? Is it dangerous? How long do they take to fade ?