Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Partially Cystic Thyroid Nodules: Ultrasound Findings of Malignancy

  • Park, Jang Mi (Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Choi, Yoonjung (Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Kwag, Hyon Joo (Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine)
  • Published : 2012.10.01
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Abstract

Objective: To seek for the ultrasound (US) findings of partially cystic thyroid nodules that are associated with malignancy. Materials and Methods: We reviewed the US characteristics of 22 surgically confirmed partially cystic papillary carcinomas, and compared them with those of 80 benign partially cystic nodules. The review cases were selected in a random order from a total of 1029 partially cystic nodules that were diagnosed with an US-guided fine needle aspiration biopsy over a period of 8 years (June 2003 to October 2010) at our institution. Results: In partially cystic thyroid nodules, a taller-than-wide shape (100%, p < 0.001) and spiculated or microlobulated margin (58.3%, p = 0.003) were significantly associated with malignancy. In terms of internal solid portion of the nodule, eccentric configuration (68.0%, p < 0.001), non-smooth margin (81.3%, p < 0.001), hypoechogenecity (30.0%, p < 0.042), and microcalcification (89.5%, p < 0.001) were more frequently demonstrated in malignant nodules than benign ones. Conclusion: In partially cystic thyroid nodules, understanding the characteristics of US findings is important to make a precise diagnosis of malignant nodules.

Keywords

References

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