Diagnostic Value of 18F-Choline PET/CT in Patients With a Thyroid Nodule With an Indeterminate Cytology: Pilot Study

Inclusion Criteria: * Age ≥ 18 years * Patient with thyroid nodule ≥15 mm with an indeterminate cytology according to the Bethesda Classification 2008 (vesicular lesion of undetermined significance (Bethesda 3); follicular neoplasm or Hürthle cells (Bethesda 4); lesion suspicious for malignancy (Bethesda 5)), and to be operated on * Patient affiliated to a social security scheme * Informed consent and signed Exclusion Criteria: * Thyroid nodules \<15 mm * Coalescing nodules preventing proper individualization of targeted nodule; * Thyroid nodule with non-diagnostic cytology (Bethesda 1), benign cytology (Bethesda 2) or malignant cytology (Bethesda 6) * Hot thyroid nodule on the thyroid scan * Major subject to a measure of legal protection or unable to consent * Pregnant women / nursing * Refusal to participate