405. Occult thyroid cancer after operations for benign thyroid disease. Is it that rare?. Issue 9 (September 2016) - Lanitis, S.; Ganis, V.; Sourtse, G.; Karkoulias, K.; Georgopoulos, E.; Samaras, V.; Tournis, S.; Vryonidou, A.; Brotzakis, P.