Follow-up
RECURRENT DISEASE
Follow-up was according to a standardized protocol. Outpatient visits were scheduled at 6, 12, 24, 36, and 60 months after surgery. The study protocol mandated a CT scan of the thorax and abdomen (or chest x-ray and liver ultrasound) at 12 and 36 months after surgery as a minimum. On indication, other diagnostics were performed to confirm or detect recurrent disease.