Smears are hemorrhagic, show abundant thin and thick colloid and scattered follicular cells with few follicular structures arranged in macrofollicles form. Background also shows mild infiltrate of mixed inflammatory cells with some macrophages, some are hemosiderin laden. Follow up (clinical and sonographic) is recommended. No evidence of atypical or malignant cells.
Right thyroid lobe TIRADS II cystic colloid nodule.
Six smears were prepared for submitted 10 ml brownish turbed fluid.