Hello Doc, My grandma 85 is complaining about pain in the left lumbar region from the past few days. The pain is not consistent. Abdominal scan report indicated a simple cyst over the Kidney. My question is if the pain is caused by the simple cyst? P. S she was diagnosed by r. Breast carcinoma a year before and received hyperthermia treatment for 3 months consistently, she is diabetic since 15 years and is taking insulin twice a day.