I just had an ultrasound of my abdomen for pain in my upper abdominal area and fever.  There was nothing abnormal about my gallbladder or pancreas; however, it was noted that I have a left renal cortical cyst.  I havent talked with my doctor about these results, just got them emailed to me.  I no longer have the uppper abdominal pain, but I still have a fever and have lower back pain on the left side.  Could this have something to do with the cyst?
Hi, Thanks for writing in. A renal cortical cyst is fluid filled area which is a benign harmless condition. A cyst of size 3 cm is small and not a concern. A larger cyst is to be reviewed on ultrasound after 6 months. It is important to know the size of the cyst before recommending you a higher imaging investigation. However, I feel that u=your abdomen pain is unlikely to be related to the cyst as you no longer are experiencing it. Small cysts can be found in 10 percent of the population in the younger age and in almost 50 percent by the age of 60 years.