甲状腺疾病 超声诊断.pptVIP

甲状腺疾病的超声诊断 刘晓云 Echo Texture Internal Architecture Margins Vascularity Lymph Nodes * D, Longitudinal sonogram of a 39-year-old woman with a papillary thyroid carcinoma with peripheral, “egg-shell calcifications” casting an acoustic shadow which obscures other sonographic features of this nodule. Transverse sonogram of a 49-year-old woman with a colloid nodule. Two echogenic foci (arrows) are seen with comet-tail ring-down artifacts that differentiate them from microcalcifications, suggesting a benign rather than malignant process. Papillary carcinoma in a 27-year-old woman with a palpable mass. Sagittal view of the left lobe of the thyroid gland shows a large, solid mass containing psammomatous calcifications, suspicious for papillary carcinoma. Cytology of a fine-needle aspirate confirmed the diagnosis. A, Transverse sonogram of a 49-year-old woman demonstrating a papillary thyroid carcinoma (arrowheads) adjacent to the common carotid artery (asterisk). This PTC is hypoechoic to thyroid but isoechoic to the overlying strap muscles (curved arrow). The esophagus (straight arrow) is often posterior to the left thyroid lobe, but is occasionally found on the right. Its striated hypoechoic appearance should not be mistaken for a thyroid nodule. B, Longitudinal sonogram of a 60-year-old woman with a hypoechoic solid papillary thyroid carcinoma (arrowheads) with well-defined margins and irregular, lobulated contours. The carcinoma is hypoechoic compared with thyroid parenchyma and strap muscle (curved arrow). C, Transverse sonogram of a 47-year-old female with a solid papillary thyroid carcinoma (arrowheads) that is roughly isoechoic to the adjacent parenchyma. Note the well-defined margins and smooth contours. D, Longitudinal sonogram of a 49-year-old man with a hyperechoic solid papillary thyroid carcinoma (arrowheads) with poorly defined margins and smooth contours. E, Longitudinal sonogram of a 57-year-old woman with a solid papillary thyroid carcinoma (arro