title: Aggressive primary thyroid lymphoma: imaging features of two elderly patients.
abstract: We report two cases of aggressive thyroid lymphoma in elderly patients that presented as large infiltrative thyroid masses with extensive invasion to adjacent structures including trachea, esophagus, and common carotid artery. Ultrasonography displayed irregular shaped, heterogeneous hypoechoic mass, mimicking anaplastic carcinoma. Computed tomography showed heterogeneously enhancing mass compared to surrounding muscles without calcification and hemorrhage. After biopsy, the masses were histopathologically diagnosed as lymphoma. Aggressive primary thyroid lymphoma is rare; therefore, here we report its image features, with emphasis on ultrasonographic findings, and discuss its differential diagnosis.
authors: Department of Radiology, Yeouido St. Mary's hospital, The Catholic University College of Medicine, Seoul, Korea.
authors: Eu Hyun
authors: 0000-0003-0061-649X
authors: EH
authors: Kim
authors: Department of Radiology, Yeouido St. Mary's hospital, The Catholic University College of Medicine, Seoul, Korea.
authors: Jee Young
authors: 0000-0002-2812-8159
authors: JY
authors: Kim
authors: Department of Pathology, Yeouido St. Mary's Hospital, The Catholic University College of Medicine, Seoul, Korea.
authors: Tae-Jung
authors: 0000-0003-3140-3681
authors: TJ
authors: Kim
keywords: Lymphoma; Multidetector computed tomography; Thyroid gland; Ultrasonography