Ct scan of adomen with & without contrast shows 4mm cyst right lobe of liver, 9mm cyst left lobe of liver & 7mm left kydney. What should I do?

Personal provider. See your personal provider to further evaluate the cause.
Not much. Small fluid filled cysts in liver and kidney are very common and do not degenerate into cancer.
Your ok.. Get ultrasound to confirm that they are cysts. If us agrees then no worries.
See below. We commonly see cysts of the liver and kidney. These are usually benign and either left alone or possibly followed with ct or us. You mention some scattered cysts less than 1cm. This is a normal finding, and nothing to be concerned about, but if you have questions, you should ask your doctor.