Rapid thyroid enlargement: intracystic hemorrhage.
D000368:Aged; D003560:Cysts / Q000000981:diagnostic imaging*; D005260:Female; D006470:Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium; D013959:Thyroid Diseases / Q000000981:diagnostic imaging*
D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m