Takashima S, Morimoto S, Ikezoe J, Arisawa J, Hamada S, Ikeda H, Masaki N, Kozuka T, Matsuzuka F
Department of Radiology, Osaka University Medical School, Japan.
Radiology. 1989 May;171(2):439-43. doi: 10.1148/radiology.171.2.2649921.
Sixteen patients with primary thyroid lymphoma were studied with computed tomography (CT) and ultrasonography (US), and findings were compared. In 13 of 16 patients, detection of the primary tumor with US and CT were comparable. US was superior in one case, and CT in another. One tumor was not detected with either technique. Thyroid lymphomas appeared as extremely hypoechoic masses intermingled with echogenic structures. Although echogenicity of unaffected thyroid tissue was also low because of coexisting Hashimoto thyroiditis, thyroid lymphomas were relatively well differentiated as markedly hypoechoic areas. Five tumors showed contiguous spread into both thyroid lobes. US and CT were equally sensitive in detection of superficial lymphomatous nodes (seven of 16 cases). CT was superior to US in the definition of tumor extent in two patients with intrathoracic tumor extension and in one with laryngeal invasion. In patients with suspected thyroid lymphoma, CT should be the primary radiologic technique used for diagnosis and staging; US will be useful in local follow-up.
对16例原发性甲状腺淋巴瘤患者进行了计算机断层扫描（CT）和超声检查（US），并对检查结果进行了比较。16例患者中有13例，超声和CT对原发性肿瘤的检测效果相当。1例患者超声检测效果更佳，另1例则是CT检测效果更佳。两种技术均未检测出1例肿瘤。甲状腺淋巴瘤表现为极低回声肿块，与高回声结构相互交织。尽管由于并存桥本甲状腺炎，未受影响的甲状腺组织回声也较低，但甲状腺淋巴瘤作为明显的低回声区域，分化相对良好。5例肿瘤显示连续蔓延至双侧甲状腺叶。超声和CT在检测浅表淋巴瘤性淋巴结方面同样敏感（16例中有7例）。对于2例有胸内肿瘤扩展和1例有喉侵犯的患者，CT在确定肿瘤范围方面优于超声。对于疑似甲状腺淋巴瘤的患者，CT应作为用于诊断和分期的主要影像学技术；超声将有助于局部随访。
