title: Thyroid nodules--benign or malignant? 1. Diagnosis.
abstract: Radioisotope scanning is an invaluable aid in determining whether a palpable thyroid nodule is benign or malignant. In many cases, however, precise diagnosis is impossible without needle biopsy or surgical exploration.
mesh_terms: D000236:Adenoma / Q000175:diagnosis; D000328:Adult; D001707:Biopsy, Needle; D002277:Carcinoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging; D013959:Thyroid Diseases / Q000175:diagnosis*; D013960:Thyroid Function Tests; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000188:drug therapy / Q000209:etiology; D014284:Triiodothyronine / Q000627:therapeutic use; D014465:Ultrasonics
chemical_list: D014284:Triiodothyronine