Isoechoic thyroid nodule with hypoechoic halo. Benign follicular nodules, either solitar...

Isoechoic thyroid nodule with hypoechoic halo. Benign follicular nodules, either solitary or as part of a multinodular goitre, are the most common mass lesions. A “hypoechoic” nodule appears darker, while an “isoechoic” nodule has similar brightness, and a “hyperechoic” nodule appears brighter. ( B ) Ultrasound 6 months later demonstrates internal cystic degeneration. Mar 16, 2026 · Echogenicity is a critical factor in the TI-RADS classification, as it helps differentiate between various types of thyroid nodules based on their ultrasound appearance, such as anechoic, isoechoic, or hypoechoic. We would like to show you a description here but the site won’t allow us. Aug 18, 2025 · “Echogenicity” describes how bright or dark a nodule appears on the ultrasound compared to the surrounding thyroid tissue. The objective was to assess the utility of gray-scale USG to identify patterns of thyroid nodules and to correlate the characteristics of benign and malignant nodules with pathological diagnosis. Solid hypoechoic nodule or Isoechoic or hyperechoic Spongiform or partially Purely cystic nodule partially cystic nodule with solid nodule, or partially cystic nod- cystic nodule without Feb 28, 2025 · Image shows 2 cm isoechoic solid thyroid nodule without any suspicious ultrasound features, diagnosed as nodular hyperplasia by surgery. Oct 7, 2023 · Learn what it means when an ultrasound shows a hypoechoic mass and find out how doctors can tell if the mass is benign or malignant. Shape Thyroid nodules are also classified according to their shape, and are broken into categories: taller than wide or wider than tall. The isthmus and left lobe (B) of the thyroid are normal in size and echotexture in the transverse view. Feb 1, 2013 · Abstract This study aimed to assess the malignancy rate of solid and isoechoic thyroid nodules without malignant sonographic features (SITNs) and to compare the malignant and benign SITNs according to nodule size, shape and color Doppler pattern. Isoechoic: Intermediate risk of malignancy. TIRADS 1 category is assigned for a normal thyroid gland with no nodules. 8 Never biopsy nodules <5 mm regardless of ultrasound appearance; these should be monitored only. Sep 14, 2017 · Halo sign which was defined as a hypoechoic rim around a nodule included absent halo sign, partly halo and complete fine sign 11. Dec 15, 2017 · Did your doctor find a hypoechoic nodule on an ultrasound? Learn what this really means for your thyroid health. The association between hypoechoic halos and thyroid cancer in patients with thyroid nodules remains a contentious issue. RSNA 3 days ago · Low-risk (EU-TIRADS 3) nodules ≥20 mm that are isoechoic with regular margins are candidates for FNA only if they show progressive growth or the patient has a history of head-and-neck irradiation or family history of thyroid cancer. For example, a fine needle aspiration (FNA) biopsy is a common procedure for thyroid and breast nodules, where a small sample of cells is extracted using a thin needle and examined under a microscope. We applaud the authors’ clinically beneficial contribution while raising some suggestions that may help enhance this study. These nodules may have microcalcifications, which appear as tiny bright spots on the ultrasound. Images from ultrasound exams performed on different patients show (a) a hypoechoic nodule, (b) a hyperechoic nodule, (c) an isoechoic nodule, (d) a heterogeneous solid nodule with both hyperechoic and hypoechoic solid portions, and (e) a mixed cystic and solid nodule in which the solid component is isoechoic to the parenchyma. We read with great interest the retrospective study of the potential correlation between the thickness of hypoechoic halos and thyroid cancer. Solid – Isoechoic and Hypoechoic Follicular Adenoma This 37 year old female presents with single nodule in the left lobe of the thyroid. Feb 1, 2018 · Target nodules were evaluated for size (defined as their maximum diameter), position within the lobe, structure (cystic, fluid component >80%, spongiform, or solid), echogenicity (isoechoic, hyperechoic, and mildly or deeply hypoechoic), margins (regular, spiculated, lobulated, or peripheral halo), intranodular calcifications May 6, 2019 · Hypoechoic nodule or solid lesion in a breast Suppose an ultrasound report said there is a hypoechoic mass or nodule, or a hypoechoic lesion in a breast. Background: Ultrasonography (US) plays a crucial role in the diagnostic management of thyroid nodules, but its widespread use in clinical practice might generate heterogeneity in ultrasound reports. Benign thyroid nodules appear small or large with predominant cystic change, fluid filled (as opposed to solid), hyperechoic or honeycomb morphology Thyroid nodules suspicious for malignancy are solid, are taller than they are wide, contain microcalcifications and are hypoechoic, with thin capsules or irregular borders and intramodular vascularity We would like to show you a description here but the site won’t allow us. This indicates the nodule’s internal structure reflects sound waves similarly to the normal gland. Up to 67% of individuals undergoing ultrasound evaluation are found to have incidental thyroid nodules. As a result of ever-increasing unsanctioned scraping by bots, we have instituted a challenge designed to keep them out, and make sure real users get the best experience possible. The nodule is almost isoechoic with normal thyroid but shows internal irregular areas of hypoechogenicity, regions of isoechogenicity, as well as microcalcifications (white arrows (c). Hypoechoic masses harbor a higher risk of malignancy, especially if the mass is very hypoechoic relative to adjacent neck musculature, or if other suspicious findings are present. Get clear results and improve your diagnostic process with reliable insights today! 2 days ago · Risk Assessment for New Sub-Centimeter Thyroid Nodule In this 47-year-old woman with a new sub-centimeter thyroid nodule, the likelihood of malignancy is approximately 5-15% based on ultrasound risk stratification, with her history of gamma knife radiosurgery to the brain 2. 5 years ago not significantly increasing her thyroid cancer risk. 010). However, the performance is better for the identification of hypoechoic malignant TNs (such as classic papillary thyroid cancer) than isoechoic malignant TNs. Feb 28, 2025 · Image shows 2 cm isoechoic solid thyroid nodule without any suspicious ultrasound features, diagnosed as nodular hyperplasia by surgery. Benign Nodule: An isoechoic nodule with a partial hypoechoic halo can be seen in benign thyroid nodules. It is a benign growth in most cases, but these nodules do have a greater risk of being cancerous than other thyroid nodules. However, ultrasound is also useful in the assessment of diffuse thyroid disease. Nov 17, 2025 · When an isoechoic nodule is predominantly cystic or shows a spongiform appearance (composed of many small cystic spaces), it is considered a reassuring feature. 20 Marked hypoechogenicity, an irregular margin, a shape that is taller than wide, a solid composition, the absence of a halo, and Sep 10, 2025 · Malignant Thyroid Nodules Malignant thyroid nodules, on the other hand, often exhibit irregular shapes, hypoechoic texture, and increased blood flow (high vascularity). 4: Incidental finding during nuchal ultrasound. Compare with normal-appearing thyroid tissue, usually immediately adjacent to the nodule. The majority of thyroid nodules derive from thyroid follicular cells. Abstract Thyroid ultrasound (US) is a key examination for the management of thyroid nodules. 802); however, it was independently associated with malignancy in partially cystic or isoechoic and hyperechoic (PCIH) nodules (p = 0. Both ultrasound based risk stratification systems and indications for fine-needle aspirations are described. Ultrasound of the mass in sagittal (a) and transverse view (b) reveals a complex mass with isoechoic and hypoechoic nodular components. Discover how Statcare can help you manage and treat hypoechoic masses effectively. Repeat FNAC of the nodule targeting its internal echogenic components was performed (D). Latest follow-up in December 2020 (E) showed further shrinkage of the nodule with development of a hypoechoic halo due to cystic wall collapse (arrow heads) and eggshell calcifications (arrows) consistent with degenerative changes seen in a mummified nodule. There is irregularity of the border at the posterior aspect of the nodule green arrow a). By Section: Anatomy Approach Artificial Intelligence Classifications Gamuts Imaging Technology Interventional Radiology Mnemonics Nuclear Medicine Pathology Radiography Signs Staging Syndromes As a result of ever-increasing unsanctioned scraping by bots, we have instituted a challenge designed to keep them out, and make sure real users get the best experience possible. Transverse greyscale ultrasonogram showing a benign thyroid nodule with hypoechoic peripheral halo sign in the left thyroid lobe (arrowhead). Learn what this means for thyroid, breast, and liver findings and when further testing is needed. Up to 50% of the adult population may have thyroid nodules, with palpable thyroid nodules are very common, being present in approximately <15% of the population. Shi and colleagues revealed a positive relationship between halo thickness and thyroid cancer risk (1). 1: Isoechoic nodule within the left thyroid lobe with a complete hypoechoic halo. Treatment will depend on the thyroid condition. Mar 15, 2023 · The presence of a well-defined hypoechoic sonographic halo surrounding an isoechoic or hyperechoic nodule increases the likelihood of benignity. A spiculated or microlobulated margin is mostly found in the infiltrating malignant tumors, which are mostly found in the hypoechoic nodules and rarely in the isoechoic nodules with a partly hypoechoic In US, these nodules appear as spongiform nodules or solid nodules that are isoechoic to hyperechoic in comparison to the surrounding thyroid tissue 2. 26 Nodule echogenicity (hypoechoic, isoechoic, hyperechoic) is described relative to thyroid parenchyma with hy-poechogenicity having an association with malignancy (Figure 4). From September 2009 to August 2010, a total of 203 patients Aug 1, 2025 · Decode your thyroid nodule ultrasound results. On the contrary, heterogeneous hypoechoic nodules showed significantly higher malignancy risks than heterogeneous isoechoic nodules in all We would like to show you a description here but the site won’t allow us. 16 Markedly hypoechoic nodules are less echogenic than the adjacent strap muscles and been shown to have a higher malignancy risk (Figure 4D). Mandel, MD MPH Chief, Division of Endocrinology, Diabetes, and Metabolism Professor of Medicine and Radiology Perelman School of Medicine, Hyperechoic: Increased echogenicity relative to thyroid tissue. RSNA Hypoechoic (darker): Highest risk of malignancy. These are usually solid nodules that appear similar in echogenicity (brightness) to the surrounding thyroid tissue. Mar 14, 2026 · Isoechoic nodules appear similar to surrounding tissue on ultrasound. Note the peripheral, interrupted calcifications (arrows) and the irregular halo (arrowhead), features, which are more commonly found in follicular-predominant Aug 3, 2025 · Depending on the nodule’s characteristics and location, additional diagnostic procedures may be pursued. 6 mL Composition: Spongiform (multiple tiny cystic spaces) Echogenicity: Isoechoic Shape: Wider than tall Margins: Smooth and well defined Posterior features: Echogenic cyst back wall Artifacts Watch short videos about thyroid ultrasound hypoechoic nodule from people around the world. Rather than a diffuse process, thyroiditis may also present as a focal, often palpable abnormality simulating nodular disease [6, 7, 8 US imaging of Thyroid Nodules Susan J. Also perhaps the report says that the abnormal is solid. The texture, or echogenicity, of the normal thyroid gland is determined using the ultrasound “grey scale” is characterized as “isoechoic” and has A smooth margin is mostly found in the hypoechoic nodules, isoechoic nodules with hypoechoic halo, and nodules of heterogeneous composition. The American College of Radiology (ACR) Thyroid Imaging Reporting and Data System (TI-RADS), introduced in 2017 Jan 20, 2026 · The absence of such data limits understanding of benign nodule evolution and may contribute to misinterpretation of longitudinal ultrasound findings. Hypoechoic nodules may suggest malignancy or thyroiditis, requiring further evaluation with fine-needle aspiration. Feb 27, 2018 · Nodule echogenicity. Oval, solid, hypoechoic (top third) and isoechoic (bottom two-thirds) nodule, outlined by a hypoechoic rim that was visible only along the isoechoic region was found on ultrasonography (inset, Papanicolaou, ×600; microfollicles with enlarged, oval, papillary-like nuclei aspirated). Malignant thyroid nodules are often hypoechoic because cancerous tissue tends to absorb more ultrasound waves than normal thyroid tissue. Jan 3, 2011 · A halo or hypoechoic rim surrounding a nodule is comprised of a pseudocapsule that is caused by fibrous connective tissue, compressed thyroid tissue and chronic inflammatory change (33). An “isoechoic” nodule appears with the same brightness or texture as the surrounding healthy thyroid tissue. Isoechoic: Similar echogenicity relative to thyroid tissue. The main disadvantage of the method is that it is operator dependent. Oct 6, 2020 · When the nodule is isoechoic or hyperechoic, a thin peripheral hypoechoic halo is typically seen, most likely caused by perinodular blood vessels and mild oedema or compression of the adjacent normal parenchyma. Mar 23, 2021 · Benign colloid nodules are usually isoechoic or slightly hypoechoic, whilst more cellular follicular nodules may be slightly hyperechoic. However, please note that several professional societies have published formal assessment criteria to determine the need for FNA, which are covered in separate articles. The hypoechoic halo around a thyroid nodule is composed of the capsule or pseudocapsule of the surrounding capsular vessels, fibrous connective tissue, compressed thyroid parenchyma, and chronic inflammatory infiltrates [58, 59]. Objectives: The aims of the study were to propose (a) a standardized lexicon for description of thyroid nodules in order to reduce US reports of interobserver variability and (b) a US There are specific characteristics about the nodule that can be seen with an ultrasound machine including: If the lesion is solid, cystic (fluid-filled), or complex (both solid and cystic); hypoechoic, isoechoic, or hyperechoic; and If the lesion shows calcification, halo sign, or irregular shape or vascularity. In solid isoechoic/hyperechoic lesions, a peripheral hypoechoic halo may be present, indicating peripheral vessels and edema caused by compression of normal thyroid tissue. On the contrary, heterogeneous hypoechoic nodules showed significantly higher malignancy risks than heterogeneous isoechoic nodules in all Feb 2, 2021 · Results Macrocalcification was independently associated with malignancy in all nodules and solid hypoechoic (SH) nodules (p < 0. Shape also provides clues. A well delineated hyperechoic Nov 9, 2023 · Hypoechoic Thyroid Nodules: Summary Hypoechoic thyroid nodules, due to their increased risk of malignancy, necessitate an expert and skilled evaluation, and often require thyroid surgery. The halo shows irregular borders in this region as well. What do these words mean? Hypoechoic means an area looks darker on ultrasound than the surrounding tissue. Sep 1, 2020 · Nonfunctioning nodules and nodules in a patient with a normal or high thyroid-stimulating hormone level may require fine-needle aspiration based on ultrasound characteristics and size. Virmani V, Hammond I. In contrast, isochoric or hyperechoic nodules with a complete halo are more likely to be benign. An iso- or hyperechoic nodule will be classified as TIRADS 3 (low risk), and a moderately hypoechoic nodule will be classified as TIRADS 4 (intermediate risk). Oct 1, 2024 · A hypoechoic nodule reflects fewer sound waves, meaning it appears darker on the ultrasound image compared to the surrounding tissue. Thyroid cancer occurs in 7e15% of thyroid nodules. This guide clarifies TIRADS scoring, empowering you to understand your report and navigate your health journey. The technical aspects of thyroid US and the use of ultrasonography to aid in thyroid biopsy or the destruction (ablation) of benign thyroid nodules or goiters (with alcohol, high-energy US, or other modalities) are considered elsewhere. Their presence simply notes a specific imaging characteristic, prompting further evaluation. 001). Surgery, chemotherapy, and targeted drugs are all options for cancer The hypoechoic halo around a thyroid nodule is composed of the capsule or pseudocapsule of the surrounding capsular vessels, fibrous connective tissue, compressed thyroid parenchyma, and chronic inflammatory infiltrates [58,59]. 3. Aug 25, 2021 · The aim of this review is to provide the reader with a comprehensive overview of thyroid imaging and reporting data systems used for thyroid nodules, so as to understand how nodules are scored with all existing systems. Thyroid US assessment of the risk of malignancy is crucial in patients with nodules, in order to select those Dec 29, 2024 · Ultrasound features of thyroid follicular nodular disease (benign thyroid nodules). Keywords: diffuse thyroid disease, ultrasound Introduction The major indication for sonography of the thyroid gland is to evaluate focal nodules or masses to try to determine its nature. The normal thyroid tissue is seen superiorly in image a and medically in image b. The nodules depicted in (b) and (d) proved to Oct 3, 2024 · Malignant vs Benign ultrasound features of Thyroid nodules The following features should be assessed: Echogenicity, margins, shape, calcification, composition, vascularity, halo Sign, lymph node involvement and growth Pattern Malignant features Hypoechoic or markedly hypoechoic Irregular, ill-defined, spiculated, or lobulated Taller than wide (measured in transverse plane) Microcalcifications Nov 10, 2025 · A hypoechoic thyroid nodule appears dark on an ultrasound. Aug 18, 2025 · Isoechoic nodules can be found in various organs, including the thyroid gland, liver, kidneys, and breast tissue. The objective of this study was to examine the potential correlation between the thickness of hypoechoic halos and the presence of thyroid cancer in individuals with thyroid nodules. Sonographic patterns of benign thyroid nodules: verification at our institution. May 14, 2025 · This article covers an approach to interpreting ultrasound of thyroid nodules, largely to determine whether an FNA is required. (A) Transverse view of the right lobe of the thyroid shows a solid nodule (N) with echogenicity relatively similar to the background parenchyma that proved to be a follicular variant of papillary carcinoma. Feb 14, 2024 · Nodules that have increased blood flow relative to surrounding thyroid tissue (hypervascular), contain microcalcifications, are hypoechoic (darker than surrounding thyroid tissue), are taller rather than wide, and/or have ill-defined or irregular borders are certainly concerning. Figure 2. Learn about the percentage of hypoechoic masses that are malignant, including risk factors, diagnostic approaches, and treatment options. Perinodular blood vessels are typically detected, or intra-nodular vascularity can also be seen, with Doppler ultrasound. Mar 28, 2017 · ( A ) Transverse image shows solid nodule in thyroid with hypoechoic halo, biopsy proven to represent a benign thyroid nodule. The high prevalence of thyroid nodules, combined with the typically indolent progression of thyroid cancer, poses a significant challenge to the optimization of patient management. 16 Markedly hypoechoic nodules are less echogenic A thyroid nodule is a discrete lesion within the thyroid gland that is palpably and / or ultrasonographically distinct from the surrounding thyroid parenchyma. 8 Jun 3, 2020 · To characterize thyroid nodules and obtain an initial estimate of their risk for malignancy, the examiner should focus on the echogenicity of the nodule; its composition (solid, cystic, mixed), shape, and margins; the presence within the nodule of calcifications or other hyperechoic foci; and the characteristics of all cervical lymph nodes (7). In the sagittal view there also appears The nodule is almost isoechoic with normal thyroid but shows internal irregular areas of hypoechogenicity, regions of isoechogenicity, as well as microcalcifications (white arrows (c). Their darker appearance indicates tissue with less echogenicity compared to normal thyroid parenchyma. The ability to recognize variations in the echogenicity of the thyroid gland itself and nodules, cysts or infiltrations within the gland can only be obtained by extensive, long term experience, even When we classified the nodules according to composition and the presence of suspicious features, there was no significant difference in malignancy risks between homogeneous hypoechoic and heterogeneous hypoechoic nodules in all subgroups (P ≥ 0. Oct 1, 2024 · To investigate the sonographic characteristics of thyroid nodules with a halo, explore the value of contrast-enhanced ultrasound (CEUS) combined with fine needle aspiration (FNA) in identifying nodules with a halo, and predict the risk of metastasis by analyzing the pathological features of the halo. Clinical Presentation: Thyroid nodule detected on CT scan. Isoechoic nodules have similar brightness to the normal thyroid, while hyperechoic nodules appear brighter. Aug 2, 2025 · Normal thyroid tissue appears homogeneously bright or hyperechoic on ultrasound. Isoechoic nodules. A hypoechoic nodule appears darker than the surrounding thyroid, suggesting it is solid. Nov 23, 2012 · The classic appearance of the thyroid in patients with lymphocytic thyroiditis, also known as Hashimoto's thyroiditis, is that of a diffusely abnormal gland that may be heterogeneous and hypoechoic [1, 2, 3] or that may show a fine micronodular pattern [4, 5]. May 6, 2019 · Hypoechoic nodule or solid lesion in a breast Suppose an ultrasound report said there is a hypoechoic mass or nodule, or a hypoechoic lesion in a breast. Hyperechoic (brighter): Lowest risk of malignancy. Hypoechoic nodules are more likely to be malignant, especially when combined with an absent or incomplete halo. Capsule was defined as circinate hyperechogenicity around a nodule 10. Spongiform nodules have multiple microcysts in >50% of the nodule and are seen in benign colloid cysts (Figure 3). The malignancy risks of nodules with Nov 10, 2025 · A hypoechoic thyroid nodule appears dark on an ultrasound. Learn about their potential causes and health implications. Surgery, chemotherapy, and targeted drugs are all options for cancer We would like to show you a description here but the site won’t allow us. The anechoic or spongiform aspect corresponds to TIRADS 2 (benign). 6). At the Clayman Thyroid Center, we are dedicated to providing exceptional care for patients with hypoechoic nodules and other thyroid conditions requiring surgery. Mar 19, 2007 · 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. Thyroid, Thyroid Nodule, Thyroidism And More Mar 14, 2026 · Use our easy-to-use TI-RADS calculator to assess thyroid nodules accurately. May 1, 2024 · This topic will review the clinical utility of thyroid ultrasonography. Fig. This nodule is classified as category TR3 (mildly suspicious) according to American College of Radiology (ACR) guidelines, but is a low-suspicion category according to American Thyroid Association (ATA). Feb 6, 2019 · Nodule echogenicity (hypoechoic, isoechoic, hyperechoic) is described relative to thyroid parenchyma with hypoechogenicity having an association with malignancy (Figure 4). (a, b) Isoechoic nodule with well-defined margins, thick halo, and minimal focal peripheral vascular blood flow by Doppler examination. Patient Data: Age: 75 years Gender: Female Ultrasound Findings Location: Left thyroid lobe – lower pole Size: 25 × 20 × 10 mm Volume: ~2. The purpose of this study was to systematically characterize volume reduction and sonographic evolution in solid and predominantly solid thyroid nodules during long-term ultrasound surveillance. Some benign patterns of Hashimoto's thyroiditis are not included in the TI-RADS classification (e. 13 Aug 21, 2017 · The isoechoic nodule in the right thyroid lobe has a well-defined margin seen in both views. Feb 1, 2018 · Target nodules were evaluated for size (defined as their maximum diameter), position within the lobe, structure (cystic, fluid component >80%, spongiform, or solid), echogenicity (isoechoic, hyperechoic, and mildly or deeply hypoechoic), margins (regular, spiculated, lobulated, or peripheral halo), intranodular calcifications Aug 1, 2025 · Decode your thyroid nodule ultrasound results. Conclusion This article serves as a synopsis of diffuse thyroid disease. When we classified the nodules according to composition and the presence of suspicious features, there was no significant difference in malignancy risks between homogeneous hypoechoic and heterogeneous hypoechoic nodules in all subgroups (P ≥ 0. Systems are compared by analyzing their strengths and weaknesses . g. 086). Rim calcification was not associated with malignancy in all nodules (p = 0. "white knight" = uniformly hyperechoic nodule, "giraffe hide" = hyperechoic areas separated by hypoechoic bands). Markedly hypoechoic nodules appear even darker than the neck muscles. Hypoechoic masses can appear in the thyroid, breast, liver, and more. The presence of a smooth margin or a thin, well-defined hypoechoic halo—a dark rim—also points toward a benign diagnosis. The echogenicity of a thyroid nodule refers to the brightness of the solid component relative to the normal thyroid parenchyma and is classified as (1) hypoechoic, meaning darker; (2) hyperechoic, meaning brighter; or (3) isoechoic, meaning equal in echogenicity (Fig. 20,28 There are specific characteristics about the nodule that can be seen with an ultrasound machine including: If the lesion is solid, cystic (fluid-filled), or complex (both solid and cystic); hypoechoic, isoechoic, or hyperechoic; and If the lesion shows calcification, halo sign, or irregular shape or vascularity. Isoechoic nodules usually represent benign lesions. 3: Hypoechoic nodule at the junction of the left thyroid lobe and isthmus Fig. Gray-scale ultrasound (US) is the standard-of-care for evaluating thyroid nodules (TNs). Typical Ultrasound Features of Thyroid Adenoma Solitary, well-defined solid nodule Iso- or hypoechoic relative to normal thyroid tissue Peripheral halo sign representing the fibrous capsule Internal vascularity may be present Absence of suspicious calcifications Recommendations Correlation with FNAC results Thyroid function tests if not already Normal thyroid gland Critical to being able to recognize ultrasonographic abnormalities in patients with various thyroid disorders, it is necessary to understand the sonographic characteristics The normal thyroid of the normal thyroid gland. Thyroid US is easily accessible, noninvasive, and cost-effective, and is a mandatory step in the workup of thyroid nodules. 2: Isoechoic nodule within the left thyroid lobe with an incomplete hypoechoic Fig. zpubn jxgk fkapw eywmvfc zjscw owhfj cptjjx igy tuwapn tkf