Computed Tomography Features of Papillary Thyroid Carcinomas

Kim, Do Hun

doi:10.1097/rct.0000000000000149

Cited by 11 publications

(24 citation statements)

References 11 publications

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“…On thyroid ultrasonography, anteroposterior and transverse diameters of the nodule are parallel with anteroposterior and transverse axes of the thyroid gland, respectively [17]. In a recent CT study of papillary thyroid carcinoma [15], the assessment of nodular shape revealed a significant difference between ultrasound and CT, but the nodular shape evaluation method in CT was different from the present study. In addition, the present study did not involve the measurement of longitudinal diameter of thyroid nodules.…”

Section: Discussioncontrasting

confidence: 91%

“…Consequently, it is still unclear whether CT aids the diagnosis of thyroid incidentaloma. Recently, one study demonstrated that the most common CT features for papillary thyroid carcinoma included homogeneous low attenuation, a taller-than-wide shape, absence of calcifications, and homogeneous decreased enhancement [15]. In the present study, the most common CT features of both FTA and FTC included low attenuation, intraglandular configuration, smooth margin, round shape, and absence of calcifications.…”

Section: Discussionsupporting

confidence: 61%

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Computed Tomography Features of Follicular Thyroid Adenoma and Carcinoma

Kim¹,

Kim²,

Baek³

et al. 2016

Thyroid Disorders Ther

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Background: No previous study has investigated the computed tomography (CT) characteristics of follicular thyroid adenoma (FTA) and follicular thyroid carcinoma (FTC). This study aimed to compare the CT features of FTA and FTC. Methods: Eighty-seven consecutive patients with FTA or FTC that underwent preoperative neck CT from January 2006 to December 2013 were included. In each case, single radiologist retrospectively examined the corresponding neck CT under blinded conditions for the histopathological results. The CT features of FTA and FTC were evaluated, as well as the specific CT features for differentiating FTC from FTA. Results: After matching the CT and histopathological results, 55 FTAs and 25 FTCs in 80 patients were analyzed. No statistically significant differences were detected in patient age, gender, nodular size, or location between FTA and FTC patients. The most common CT features in both FTA and FTC included low attenuation, intraglandular configuration, smooth margin, round shape, absence of calcifications, and inhomogeneous enhancement. In particular, the prevalence of decreased, iso-, and increased enhancement was similar in both FTA and FTC. The prevalence of homogeneous attenuation in FTC was higher, whereas the prevalence of inhomogeneous attenuation in FTA was higher. The logistic regression analysis revealed no significant differences between FTA and FTC in any CT features, except for the pattern of attenuation (p = 0.002). Conclusion: No specific CT features of FTA and FTC were identified, and CT may be unhelpful for distinguishing FTC from FTA.

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Section: Discussioncontrasting

confidence: 91%

Section: Discussionsupporting

confidence: 61%

Computed Tomography Features of Follicular Thyroid Adenoma and Carcinoma

Kim¹,

Kim²,

Baek³

et al. 2016

Thyroid Disorders Ther

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“…These included the presence or absence of calcification and necrosis and heterogeneous or homogeneous attenuation. 15,21 ATC contained calcification and necrosis and had heterogeneous attenuation. Thyroid lymphoma, in contrast, was homogeneous without calcification or necrosis.…”

Section: Discussionmentioning

confidence: 98%

“…Calcifications may be seen in both papillary thyroid cancer (32%) and ATC (62% in our cohort). 21 Thyroid lymphoma typically presents with a rapidly enlarging anterior neck mass and symptoms of mass effect, similar to ATC. Differentiation of lymphoma from ATC is important for both prognosis and treatment implications, and when this rare entity is suspected, flow cytometry can be performed on a fresh fine-needle aspiration sample for diagnosis.…”

Section: Discussionmentioning

confidence: 99%

“…DTC lymph nodes are rarely necrotic. 21 Thus, it is important for biopsy purposes to target a viable tumor focus, but because ATC and papillary thyroid cancer may coexist 22 (Fig 6), the lesions with higher-grade imaging features would be preferentially selected for biopsy. If a lymph node is biopsied and initial fine-needle aspiration triage indicates DTC in a patient with CECT imaging of concern for ATC, another biopsy of the thyroid mass would be indicated.…”

Section: Discussionmentioning

confidence: 99%

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Imaging of Anaplastic Thyroid Carcinoma

Ahmed¹,

Ghazarian²,

Cabanillas

et al. 2017

AJNR Am J Neuroradiol

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Anaplastic thyroid carcinoma is fatal if unresectable. However, improved survival has been reported after gross total resection and multimodality therapy. In this report, we describe the contrast-enhanced high-resolution CT characteristics of anaplastic thyroid carcinoma in 57 patients. Anaplastic thyroid carcinoma presented as a large neck mass with necrosis in 82% of cases. The tumors demonstrated common extrathyroidal extension (91%). Sixty-two percent of tumors demonstrated calcification. Visceral space invasion involved the esophagus (62%), trachea (57%), and larynx (29%). Carotid artery encasement was present in 42%, and 43% involved the internal jugular vein. Sixty-three percent had lateral compartment lymphadenopathy; 58% of these nodes were necrotic, and 11% were cystic. No metastatic nodes had calcification. Central compartment lymphadenopathy was seen in 56% of cases, and lateral retropharyngeal lymphadenopathy was detected in 12%. Knowledge of these imaging features aids in guiding the approach to the initial tissue diagnosis with either fine-needle aspiration or core biopsy, assessing the feasibility of surgical resection, and determining prognosis.

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Non-invasive Imaging Biomarkers of Thyroid Nodules with Indeterminate Cytology

Noortman

Koster

Velden

et al. 2023

Integrated Diagnostics and Theranostics of Thyroid Diseases

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Stratified by ultrasonography and fine-needle aspiration cytology, indeterminate nodules are lesions with an intermediate risk of being malignant (approximately 25%). Diagnostic resection of half the thyroid gland provides the true nature of these lesions but at the cost of 75% of the patients being futilely operated. In case a malignancy is found, a second surgery to remove the whole thyroid gland is often necessary. Different approaches either on cytological material or using imaging have been investigated to further stratify these lesions. This chapter reviewed biomarkers obtained using conventional as well as artificial intelligence-based non-invasive imaging strategies for the differentiation of thyroid nodules with indeterminate cytology. An overview of the abilities of different tests to differentiate between benign and malignant nodules was provided, taking into account the clinical readiness and cost-effectiveness.

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Computed Tomography Features of Papillary Thyroid Carcinomas

Abstract: The study results demonstrated that the most common CT features of PTCs included homogenous low attenuation, a taller-than-wide shape, no calcifications, and homogeneous decreased enhancement and that CT was inferior to US for evaluating nodular shape and calcification.

Cited by 11 publications

References 11 publications

Computed Tomography Features of Follicular Thyroid Adenoma and Carcinoma

Computed Tomography Features of Follicular Thyroid Adenoma and Carcinoma

Imaging of Anaplastic Thyroid Carcinoma

Non-invasive Imaging Biomarkers of Thyroid Nodules with Indeterminate Cytology

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