Sen, YasarCimbek, Emine AycaYuca, Sevil AriGedik, Gonca KaraSari, Oktay2020-03-262020-03-2620140334-018X2191-0251https://dx.doi.org/10.1515/jpem-2013-0302https://hdl.handle.net/20.500.12395/30971Graves' disease is the most common reason of hyperthyroidism in children. Graves' disease with accompanying functioning nodules is defined as Marine-Lenhart syndrome. This syndrome has not been described in children before. Here, a 15-year-old girl with Graves' disease and a coexisting cold nodule is presented. A thyroid scan showed diffuse uptake of Tc-99m pertechnatate in both lobes and decreased uptake in accordance with the left lobe nodule. The nodule was histologically diagnosed as benign. The patient was diagnosed with type 1 diabetes mellitus and polyglandular autoimmune syndrome during clinical follow-up. The differential diagnoses of Graves' disease with coexisting nodules should include the Marine-Lenhart syndrome. Treatment options should be determined taking this rare condition into account.en10.1515/jpem-2013-0302info:eu-repo/semantics/closedAccesschildrenGraves' diseasenoduleArticle2701.02.202018919124057592Q2WOS:000330168900033Q4