Typically, the following is done: MRI of the head to check for intracranial complications (eg, SEGAs) at least every 3 years Renal ultrasonography or MRI of the abdomen to check for kidney tumors every 3 years in school-aged children and every 1 to 2 years for life in affected adults In girls ≥ 18 years, screening for exertional dyspnea and shortness of breath annually and high-resolution CT every 5 to 10 years to screen for lymphangioleiomyomatosis Neuropsychologic testing periodically and behavioral screening in children to help plan for support at school and behavioral interventions Echocardiography at least every 3 years for asymptomatic children and adolescents with cardiac rhabdomyomas Regular monitoring must be continued until cardiac rhabdomyomas have regressed.