Radio - US - Head & Neck

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Microcalcification must be distinguished from the inspissated colloid that may also appear as tiny echogenic foci. In contradistinction to microcalcification, the presence of colloid is a reliable indicator of benignity. 25 High-frequency US will demonstrate comet-tail or ring-down artifact (Figures 9 and 10) with colloid, which is not seen with microcalcification.

Microcalcification must be distinguished from the inspissated colloid that may also appear as tiny echogenic foci. In contradistinction to microcalcification, the presence of colloid is a reliable indicator of benignity. 25 High-frequency US will demonstrate comet-tail or ring-down artifact (Figures 9 and 10) with colloid, which is not seen with microcalcification.

Thyroid - Papillary Carcinoma - Punctate calcification (arrowheads) within an ill-defined solid hypoechoic thyroid nodule (arrows) which is highly suggestive of papillary carcinoma. - Fine punctate calcification due to calcified psammoma bodies within the nodule is seen in papillary carcinoma in 25%–40% of cases . If used as the sole predictive sign of malignancy, microcalcification is the most reliable one with an accuracy of 76%, specificity of 93% and a positive predictive value of 70%.

Thyroid - Papillary Carcinoma - Punctate calcification (arrowheads) within an ill-defined solid hypoechoic thyroid nodule (arrows) which is highly suggestive of papillary carcinoma. - Fine punctate calcification due to calcified psammoma bodies within the nodule is seen in papillary carcinoma in 25%–40% of cases . If used as the sole predictive sign of malignancy, microcalcification is the most reliable one with an accuracy of 76%, specificity of 93% and a positive predictive value of 70%.

Thyroid - Hypoechoic Nodule - Longitudinal grey scale sonogram shows a solid, hypoechoic thyroid nodule (arrows) with ill-defined margins anteriorly. Histology: papillary carcinoma.  The incidence of malignancy is 4% when a solid thyroid nodule is hyperechoic. If the lesion is hypoechoic, the incidence of malignancy rises to 26%. However, hypoechogenicity alone is inaccurate in predicting malignancy,

Thyroid - Hypoechoic Nodule - Longitudinal grey scale sonogram shows a solid, hypoechoic thyroid nodule (arrows) with ill-defined margins anteriorly. Histology: papillary carcinoma. The incidence of malignancy is 4% when a solid thyroid nodule is hyperechoic. If the lesion is hypoechoic, the incidence of malignancy rises to 26%. However, hypoechogenicity alone is inaccurate in predicting malignancy,

Thyroid - Cystic Degeneration - well defined heterogeneous thyroid nodule (arrows) with a large cystic component (arrowheads) and septation (open arrows). Features are compatible with a benign hyperplastic nodule - It is generally believed that thyroid nodules with large cystic components are usually benign nodules that have undergone cystic degeneration.

Thyroid - Cystic Degeneration - well defined heterogeneous thyroid nodule (arrows) with a large cystic component (arrowheads) and septation (open arrows). Features are compatible with a benign hyperplastic nodule - It is generally believed that thyroid nodules with large cystic components are usually benign nodules that have undergone cystic degeneration.

Thyroid - Colloid Cyst - Longitudinal ultrasound shows the typical appearance of a colloid nodule with multiple “comet tail” artifacts  scattered throughout the cyst. Note the thin walls and posterior acoustic enhancement

Thyroid - Colloid Cyst - Longitudinal ultrasound shows the typical appearance of a colloid nodule with multiple “comet tail” artifacts scattered throughout the cyst. Note the thin walls and posterior acoustic enhancement

Thyroid - Vascularity of nodules

Thyroid - Vascularity of nodules

Thyroid - Papillary carcinoma - Occasionally demonstrates a cystic component and may mimic a benign nodule, though the presence of punctate calcification within the solid component helps in its identification.

Thyroid - Papillary carcinoma - Occasionally demonstrates a cystic component and may mimic a benign nodule, though the presence of punctate calcification within the solid component helps in its identification.

Thyroid - Colloid Nodule - The presence of comet-tail artifacts (arrowheads) within a predominantly cystic thyroid nodule (arrows) indicates the presence of colloid within a benign colloid nodule and is a strong predictor of benignity.

Thyroid - Colloid Nodule - The presence of comet-tail artifacts (arrowheads) within a predominantly cystic thyroid nodule (arrows) indicates the presence of colloid within a benign colloid nodule and is a strong predictor of benignity.

Thyroid - Coarse Nodule Calcification -  dense shadowing within a thyroid nodule suggestive of benign calcification - Coarse, dysmorphic or curvilinear calcifications commonly indicate benignity.

Thyroid - Coarse Nodule Calcification - dense shadowing within a thyroid nodule suggestive of benign calcification - Coarse, dysmorphic or curvilinear calcifications commonly indicate benignity.

Thyroid - Minimal thyroid volume

Thyroid - Minimal thyroid volume


Περισσότερες ιδέες
WK 1 THYROID Papillary thyroid cancer | Radiology Reference Article | Radiopaedia.org Sonographic appearance of papillary thyroid cancer Presentation is usually with a solitary palpable thyroid mass.

WK 1 THYROID Papillary thyroid cancer | Radiology Reference Article | Radiopaedia.org Sonographic appearance of papillary thyroid cancer Presentation is usually with a solitary palpable thyroid mass.

La calcificación periférica completa, regular o en cáscara de huevo suele asociarse con nódulo benigno. Sin embargo cuando la calcificación periférica es irregular y muestra multitud de interrupciones, suele asociarse entonces con malignidad.

La calcificación periférica completa, regular o en cáscara de huevo suele asociarse con nódulo benigno. Sin embargo cuando la calcificación periférica es irregular y muestra multitud de interrupciones, suele asociarse entonces con malignidad.

WK 1 THYROID Parathyroid adenoma Longitudinal

WK 1 THYROID Parathyroid adenoma Longitudinal

normal thyroid ultrasound image

normal thyroid ultrasound image

Morphologic patterns. 25-year-old man with nodular goiter. Ultrasound scan shows isoechoic nodule with halo.

Morphologic patterns. 25-year-old man with nodular goiter. Ultrasound scan shows isoechoic nodule with halo.

Multinodular goitre. A. Transverse dual ultrasound image shows enlargament of thyroid lobes and isthmus and multiple hyperechoic solid nodules with uniform thin halo (arrows). Mixed solid and cystic thyroid nodule in the left lobe. Tr: tracheal gas shadow. B. Transverse sonogram and color-doppler mode scan show a well-defined isoechoic thyroid nodule with thin complete hypoechoic halo, intranodular cystic/colloid space and peripheral vascularity, findings indicative of a hyperplastic nodule.

Multinodular goitre. A. Transverse dual ultrasound image shows enlargament of thyroid lobes and isthmus and multiple hyperechoic solid nodules with uniform thin halo (arrows). Mixed solid and cystic thyroid nodule in the left lobe. Tr: tracheal gas shadow. B. Transverse sonogram and color-doppler mode scan show a well-defined isoechoic thyroid nodule with thin complete hypoechoic halo, intranodular cystic/colloid space and peripheral vascularity, findings indicative of a hyperplastic nodule.

Medical Laboratory and Biomedical Science: Free Online Atlas of Thyroid Cytopathology

Medical Laboratory and Biomedical Science: Free Online Atlas of Thyroid Cytopathology

SERAM 2014 / S-1170 / Utilidad del sistema de clasificación TI-RADS en el manejo del nódulo tiroideo. - EPOS™

SERAM 2014 / S-1170 / Utilidad del sistema de clasificación TI-RADS en el manejo del nódulo tiroideo. - EPOS™

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