title: Intrathyroidal thymic tissue mimicking a malignant thyroid nodule in a 4-year-old child.
abstract: Intrathyroidal thymic tissue is rare and may be confused with a malignant thyroid nodule because of hyperechoic dots mimicking calcifications. We report the case of a thyroid nodule with malignant ultrasonographic findings in a 4-year-old child, which was confirmed cytologically as ectopic thymic tissue. The sonographic findings of ectopic thymus were similar to those of the thymus; therefore, clinicians should be familiar with ultrasonography findings of normal thymic tissue.
authors.affiliation: Department of Radiology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea.
authors.forename: So Hyun
authors.identifier: 0000-0002-6481-1983
authors.initials: SH
authors.lastname: Park
authors.affiliation: Departments of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea.
authors.forename: Chang-Woo
authors.identifier: 0000-0002-4674-7295
authors.initials: CW
authors.lastname: Ryu
authors.affiliation: Departments of Pathology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea.
authors.forename: Gou Young
authors.identifier: 0000-0002-3119-5707
authors.initials: GY
authors.lastname: Kim
authors.affiliation: Departments of Pediatrics, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea.
authors.forename: Kye Shik
authors.identifier: 0000-0003-4958-9840
authors.initials: KS
authors.lastname: Shim
keywords: Pediatrics; Thyroid; Thyroid nodule; Ultrasonography