Journal List > J Korean Thyroid Assoc > v.8(1) > 1056591

Kwak: Postoperative Surveillance of Thyroid Cancer: In View of a Radiologist

Abstract

Postoperative surveillance in patients with thyroid cancer is very important for radiologist to help the clinician manage the patient. The role of ultrasound is important but small volume tumor recurrence may not affect survival as well as its treatment may, at times, cause more morbid than its natural disease progression. In this review, I discuss postoperative surveillance in patients with thyroid cancer in the view of a radiologist.

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Fig. 1.
Several suspicious US features suggesting pathologic lymph nodes (arrows). (A) Hyperechogenicity. (B) Round shape. (C) Internal cystic change and calcifications.
jkta-8-8f1.tif
Fig. 2.
Suture granuloma. Ill-defined ovoid hypoechoic nodules (arrows) with multiple internal echogenic foci (A, transverse scan and B, longitudinal scan).
jkta-8-8f2.tif
Fig. 3.
A remnant thyroid tissue. After right thyroidectomy due to Hashimoto's thyroiditis, a heterogeneous oval hypoechoic lesion (arrows) was seen inferior to the inferior horn of a thyroid cartilage (arrowheads, A, transverse scan and B, longitudinal scan).
jkta-8-8f3.tif
Fig. 4.
A traumatic neuroma. US shows a nodule with oval, heterogeneous, isochoic mass (arrows) with internal hyperechoic strands.
jkta-8-8f4.tif
Table 1.
US feature suggesting a pathologic lymph node
Published year Authors Features
2003 Pacini et al.1) Clear hypoechoic, disomogeneous pattern, rounded or bulging shape without evidence of central halo
2004 Torlontano et al.20) 4 mm or more, rounded shape, and/or presence of microcalcifications and/or cystic component adjunctive-absence of hyperechoic hilus and/or hypervascularization
2007 Leboulleux et al.21) Cystic appearance, hyperechoic punctuations, loss of hilum, and peripheral vascularization, round shape, hypoechogenicity, and the loss of hilum
2008 Pelttari et al.22) New tissue growth in the thyroid bed or an enlarged, round lymph node without a fatty hyperechoic hilum
2010 Tuttle et al.23) Focal or diffuse hyperechogenicity, micro- or macrocalcification, cystic change, abnormal vascular pattern or a round shape (long=transverse diameter ratio<1.5)
2011 Yoon et al.24) Hyperechogenicity, cystic change, presence of calcifications, round shape, abnormal vascularity
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