Isthmus topography is a risk factor for persistent disease in patients with differentiated thyroid cancer - Angela Alibrandi; Massimiliano Siracusa; Alfredo Campennì; Giovanni Tuccari; Angiola Saccomanno; Luca Giovanella; Giulia Giacoppo; Sergio Baldari; Gianlorenzo Dionigi; Rosaria Maddalena Ruggeri; Flavia La Torre (European Journal of Endocrinology, 2021)