Had the ultrasound when I got back and was told it was a 2.6 cm complex cyst but they could not rule out neoplasm and to go for an MRI. Nice, except I have had a pacemaker since my early 30s (heart's fine, wiring is screwed up--had a heart block when I swallowed--kind of thing you laugh about after the fact) and so the MRI was a no go.