I have a 2.2 cm exophytic rt renal lower pole mildly complex cyst. what to do?

Renal cysts: Are categorized using the bosniak classification scheme. This sounds like a bosniak ii lesion: minimally complex; a few thin (< 1mm) septa, thin ca++; non-enhancing high-attenuation (due to to proteinaceous or hemorrhagic fluid) renal lesions of less than 3 cm are also included in this category; these lesions are generally well marginated. If so, no followup is needed.