Fine | 合法醫療器材資訊網

由DSDean著作·2015·被引用33次—Fine-needleaspiration(FNA)biopsyofthethyroidglandisanaccuratediagnostictestusedroutinelyintheinitialevaluationofnodularthyroid ...

Thyroid nodules are common in clinical practice and the majority are benign with the risk of malignancy varying from 7 to 15%. Clinical evaluation includes careful history and physical examination, laboratory tests, neck ultrasound (US), and a fine-needle aspiration (FNA). Thyroid FNA or biopsy is an accurate test for determining malignancy in a nodule and is an integral part of current thyroid nodule evaluation. Results are superior when FNA is performed with ultrasound-guidance (USFNA). Herein, we describe techniques used for US-guided FNA. FNA results are classified as diagnostic (satisfactory) or nondiagnostic (unsatisfactory). Unsatisfactory smears (5-10%) result from hypocellular specimens usually caused by cystic fluid, bloody smears, or suboptimal preparation. Diagnostic smears are conventionally classified into benign, indeterminate, or malignant. A benign cytology is negative for malignancy, and includes cysts, colloid nodule, or Hashimoto thyroiditis. Malignant (o...