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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,

Ultrasound of thyroid cancer

A hypoechoic or anechoic rim encircling a nodule, known as the halo sign (Figure 11), suggests benignity; however, this sign may be absent in >50% of benign nodules and present in up to 20% of malignant nodules.

A hypoechoic or anechoic rim encircling a nodule, known as the halo sign (Figure suggests benignity; however, this sign may be absent in of benign nodules and present in up to of malignant nodules.

Follicular Neoplasm: Longitudinal sonogram of the thyroid shows a solid, homogeneous, egg-shaped nodule with a thin capsule.

Follicular Neoplasm: Longitudinal sonogram of the thyroid shows a solid, homogeneous, egg-shaped nodule with a thin capsule.

Criterios de malignidad de un nódulo tiroideo

The Epidemic of Thyroid Nodules: Which Should Undergo Fine Needle Aspiration?

Two multilocular cystic lesions in the left kidney with multiple anechoic spaces traversed by thin septations. RCC vs Cystic Nephroma

Kidney - Multilocular Cystic Lesions -Two are seen in the left kidney with multiple anechoic spaces traversed by thin septations - RCC vs Cystic Nephroma.

A complex, mostly cystic thyroid nodule in the right thyroid lobe. These complex nodules have a lower risk of malignancy.

Read a case study from the Diabetes Center about a female and her eventual diagnosis of papillary thyroid carcinoma.

Ultrasound scan of a papillary thyroid microcarcinoma (PTMC) in a 50-year-old female. A hypoechoic nodule, 0.52×0.65 cm in size, was observed in the right lobe. The PTMC has an unclear boundary, an irregular shape and a ratio of length/width of ≥1.

Ultrasound scan of a papillary thyroid microcarcinoma (PTMC) in a female. A hypoechoic nodule, cm in size, was observed in the right lobe. The PTMC has an unclear boundary, an irregular shape and a ratio of length/width of

Benign, small non-neoplastic nodules: Longitudinal sonogram of the thyroid shows small cystic nodules with internal echogenic foci with posterior reverberation, ‘‘comet-tail,’’ artifacts (arrow).

Benign, small non-neoplastic nodules: Longitudinal sonogram of the thyroid shows small cystic nodules with internal echogenic foci with posterior reverberation, ‘‘comet-tail,’’ artifacts (arrow).

Papillary carcinoma in the right thyroid lobe with a hypoechoic mass with microcalcifications and irregular vascularity

Papillary carcinoma in the right thyroid lobe with a hypoechoic mass with microcalcifications and irregular vascularity

Thyroid Nodules

Presentation and investigation of thyroid nodules;

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