I had a ct scan with contrast last month as part of an ibs workup. They found a "single small 8mm low density lesion" that was thought to be a cyst or hemaninoma, (although there is no peripheral enhancement??) Since a cyst could not be confirmed it was recommended that an ultrasound be performed to confirm. However, since an ultrasound had been performed the prior month and didn't show anything the doctor wants to wait a 4-6 months and repeat it. In the meantime, I'm scared this may be something more serious. Can you give me any reassurances?