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Liver lesions discovered incidentally on ultrasound: evaluation of reader ability to characterize lesions on MRI without intravenous contrast Most of the changes in lesion detection and characterization made after contrast administration were clinically insignificant A hyperechoic liver lesion on ultrasound can arise from a number of entities, both benign and malignant. A benign hepatic hemangioma is the most common entity encountered, but in patients with atypical findings or risk for malignancy, other entities must be considered Cystic liver disease encompasses a heterogeneous group of fluid-filled lesions within the liver parenchyma. Hepatic cysts (HCs) are most often discovered incidentally on imaging. Detection of HCs is rising, due to vast availability and increased use of abdominal imaging modalities Ultrasound appearance of a target lesion in the liver and its significance A target lesion on US is characterized as a hepatic lesion with an echogenic center and a peripheral hypoechoic rim. This appearance has a high association with malignancy, including metastatic disease, hepatocellular carcinoma, and lymphoma
US and CT are indicated for diagnosis of biliary obstruction or gallbladder diseases and for differentiation of cysts from solid liver lesions. Intraoperative ultrasound detects small liver lesions (< 5 mm). Endoscopic US assesses the left liver lobe and the gastrohepatic ligament lymph nodes, and can help perform FNA 3.2cm liver lesion found with ultrasound. Not being the only one awake is a comfort! Originally my doctor said the liver was probably a hemangioma as they're common in women of my age. The first ultrasound lady thought it was benign as well. It was only the second scan today that they suddenly decided otherwise Benign liver lesions usually don't cause any symptoms. Many people only find out they have one when they go for an imaging test, like an ultrasound, for a different health issue. If it does cause.. Liver lesions are abnormal clumps of cells in your liver, and they are very common. They will be detected in as much as 30% of people over 40 who undergo imaging tests. 1 The majority of liver lesions are benign (not harmful) and don't require treatment. But in some cases, liver lesions are malignant (cancerous) and should be treated Sonographic halo sign is used in a number of situations. They include: hypoechoic halo sign (also known as target or bull's eye sign) in liver metastases: used in hepatobiliary imaging, is a concerning feature for malignant lesion if the lesion is a hyperechoic liver lesion 1,2; ultrasound halo in angiolymphoid hyperplasia with eosinophilia (ALHE): used when interpreting the temporal artery
Certain liver diseases such as hepatitis, cirrhosis, and fatty liver (steatosis) can be reviewed in great detail from the ultrasound of the liver. For example, individuals suffering from a fatty liver will exhibit brighter features in the fatty liver ultrasound. Whereas, persons with hepatitis will show a dimmer than average color from the scan On ultrasound, biliary hamartomas appear as small well-circumscribed lesions scattered throughout the liver, with hypoechoic, hyperechoic, or mixed echogenicity depending on solid, cystic, or mixed components, respectively (Fig. 2B). Malignant transformation of biliary hamartoma to cholangiocarcinoma is extremely rare For this reason, a multidisciplinary team of German researchers conducted a study of over 45,000 patients at the University Hospital Ulm who had an ultrasound exam during a 10 year period for the diagnosis of benign focal liver lesions FNHs are of similar echotexture to normal liver parenchyma on ultrasound, hence the classic description of a stealth lesion that may only be detected by observing mass effect on surrounding structures and a hypervascular spoke-wheel-like appearance of the central scar on colour Doppler (Figure 4)
Benign liver lesions that contain fat include focal or geographic fatty change (steatosis), pseudolesions due to postoperative packing material (omentum), adenoma, focal nodular hyperplasia, lipoma, angiomyolipoma, cystic teratoma, hepatic adrenal rest tumor, pseudolipoma of the Glisson capsule, and xanthomatous lesions in Langerhans cell histiocytosis Purpose: This study was undertaken to establish the reliability of automated volumetric liver scans in detecting focal liver lesions by evaluating the degree of agreement between conventional and volume ultrasound (US) examinations. Materials and methods: Over a period of 3 months, we prospectively studied 100 consecutive patients (36 men and 64 women; age range 15-87 years; mean age 63 years. Liver lesions are most often benign At least 60% of liver lesions can be characterised purely by ultrasound. Screening and examinations of supposedly healthy patients often result in an accidental discovery of liver lesions. According to Dr Antonius Schuster MD MBA, Head of the Department of Radiology at the LKH Bregenz, (Vorarlberg) I just got an ultrasound done to my liver, can this be reversed?FINDINGS: LIVER: Diffuse increase in echogenicity of the liver is noted. No obvious focal lesion. Hepatic and portal venous blood flow is in normal direction.BILIARY SYSTEM: Gallbladder is normal in size and wall thickness. No stones visualized. No intrahepatic biliary dilatation. CBD measurement = 4 mm. Normal in size.PANCREAS. Liver lesions are almost exclusively detected by medical imaging techniques. Several different types of imaging studies can reveal the presence of liver lesions. Ultrasound technology or ultrasonography uses sound waves to produce sound waves that create an image of the organ
, during first evaluation or follow-up for a primary neoplasm, or during surveillance in chronic liver diseases and cirrhosis Liver abscess have heteromorphic ultrasound appearance, the most typical being that of a mass with irregular shapes, fringed, with fluid or semifluid content, with or without air inside. Doppler examination shows the lack of vessels within the lesion
Fig. 7.1 (a) Single hypoechoic intrahepatic space-occupying lesion with clear boundary and regular shape. (b) Multiple hypoechoic intrahepatic space-occupying lesions (arrow) with the same size and round or oval shape Hyperechoic Type The echo of lesion is higher than that of the liver parenchyma with the internal area presents hyperechoic area (Figs. 7.2a and 7.3) A Hypodense Liver Lesion or Hypodensity Liver is a deformity in the liver tissue that appears less dense than the surrounding tissue in radiological scans such as Computed Tomography (CT) scans or Magnetic Resonance Imaging (MRI). The appearance of these lesions in the radiological tests does not improve with the injection of intravenous contrast, and their presence may indicate a number of. Some liver lesions (eg, hepatic hemangioma <3 cm) can be diagnosed based on noncontrast ultrasound if imaging criteria are met, while other lesions require further diagnostic evaluation based on lesion characteristics (eg, lesion size, margins). (See Hepatic hemangioma, section on 'Diagnostic approach'. Contrast-enhanced ultrasound (CEUS) is a diagnostic technique for imaging the liver and other organs [ 1-7 ]. It is used in most of Europe and Asia, as well as in many other countries worldwide. Guidelines for the use of ultrasound and CEUS-guided applications of the liver have been published [ 7-14 ]. This topic will review the role of CEUS in. Intraoperative ultrasound can detect additional liver lesions and modify the surgical management of patients with liver metastases from colorectal carcinoma. Intraoperative ultrasound has also been extended to use in identifying primary hepatic tumors during resection, in particular, hepatocellular carcinoma
I went for an ultrasound scan last week as I am concerned about my weight gain. Turns out I found out yesterday it is a 2.6cm lesion on my liver. They found lesions on my liver last year but was told nothing to worry about. The weight gain is my hormone treatment 681 focal liver lesions were identified with ultrasound in 542 adults (40% male, mean age 39.4 years, range 23-73 years) from cohort of 2,670 asymptomatic adults and evaluated for clinical characteristics and outcom
On ultrasound, the whole liver echogenicity is markedly raised with hepatic vessels suboptimally visualised. This is consistent with fatty liver. However, in segment IV of the right lobe, there is a hypoechoic, rounded lesion noted prevalence of benign focal liver lesions in adults is high, with at least one lesion seen in up to 15% of patients, accurate characterization of incidentally detected lesions is an important objective of diagnostic imaging . Benign lesions are very common in the liver, and even in patients with primary malignancy, benign lesions unrelate Section 2 elaborates on the research methodology of liver lesion detection in the ultrasound image. Section 3 shows the exploratory results. A complete discussion is demonstrated in Section 4. Finally, Section 5 draws a conclusion. 2. Research Methods This segment represents the computer vision approach to detect liver lesions from ultrasound. Liver metastases are frequently detected by gray-scale ultrasound, but CT is the preferred modality to determine extent of disease, number of hepatic lesions, and extrahepatic disease. Response to therapy is also better evaluated by CT, because treatment-related fatty infiltration may obscure lesions that have diminished in size or changed.
Ultrasound is an excellent front-line diagnostic tool for evaluating the liver. It can help assess the presence of liver disease (such as fatty liver), detect liver lesions, and much more. But many factors can affect the accuracy of your diagnosis. We spoke with Dr. Barbara McComb, a Mayo Clinic diagnostic radiologist and ultrasound expert with. The Liver Imaging Reporting and Data System (LI-RADS) is a classification system for liver lesions which is used in patients with liver cirrhosis and chronic HBV without cirrhosis, because these patients have an increased risk of hepatocellular carcinoma (HCC). The LI-RADS category reflects the probability of HCC and is based on the typical CT. Ultrasound is the best imaging method for characterizing these purely cystic liver lesions Well- defined homogenous cystic component Posterior acoustic enhancement Incidental liver lesions on medical imaging are relatively common and the vast.
58 liver tumors in 136 patients at The First Affiliated Hospital of Nanchang University were performed. The histopathological or imaging diagnostic results were used as controls to evaluate the sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of US, CEUS, SWE, and multimodal ultrasound imaging, which combines these 3 modes, in the differential. Hyperechoic liver lesions. A hyperechoic liver lesion on ultrasound can arise from a number of entities, both benign and malignant. A benign hepatic hemangioma is the most common entity encountered, but in patients with atypical findings or risk for malignancy, other entities must be considered He was referred for ultrasound and the scan showed generalised increased in parenchymal echogenicity, consistent with fatty liver. The scan also showed a 5cm solitary hypoechoic solid mass in segment IV of right lobe liver. Both of these lesions are solid and oval in shape, with minimal internal vascularity. The appearances are in keeping with.
Abdominal ultrasound shows multiple hypoechoic focal lesions in the spleen, some of them having central echogenic foci producing bull's eye or target configuration. Contrast enhanced computed tomography shows multiple, non-enhancing, hypodense focal areas in liver in addition to the spleen. Few of the splenic lesions demonstrate central hyperdense foci Liver Hemangioma. A liver hemangioma is a benign (non-cancerous) tumor in the liver that is made up of clusters of blood-filled cavities. Most liver hemangiomas do not cause symptoms, although larger ones can cause poor appetite, nausea and vomiting. Smaller hemangiomas do not need to be treated, but larger hemangiomas may need surgery
Intraoperative Ultrasound of the Liver Kristopher Croome KMarie Reid Lombardo INTRODUCTION Intraoperative ultrasound (IOUS) of the liver involves the use of ultrasound imaging to provide real-time assessment during surgical procedures of the liver.1, 2, 3 In 1981, Makuuchi et al.4 described the use of IOUS (FIG 1) of the liver as an adjunct for hepatectomy Aim. The aim of this prospective study was to evaluate the additional value of contrast-enhanced ultrasound (CEUS) in identifying and characterizing of focal liver lesions (FLLs) that are indistinctive on B mode ultrasound (BMUS). Methods. The study focused on 70 consecutive patients (male 46, female 24; mean age, 53.1 years ± 10) Liver techniqueLiver technique Always clear 2-3 cmAlways clear 2-3 cm beyond the margin ofbeyond the margin of any organ to avoidany organ to avoid exophytic or adjacentexophytic or adjacent masses.masses. 4 A hypoechoic lesion could be benign liver hyperplasia, which is very common in older dogs, or a cancerous nodule. Certain patterns, such as a target lesion, are more associated with cancer. If the diagnosis is unclear after ultrasound, a fine needle aspirate or biopsy might be recommended to determine what the nodule is these lesions, which were generally located near the gallblad- der (Figure 1) or in the periportal area (Figure 21, ranged from 23-44 mm (mean, 31 mm). They produced no effect of Figure 2. Hypoechoic focal lesion at the porta hepatis. Figure 1. Hypoechoic focal lesion near the gallbladder. mass
A liver hemangioma (he-man-jee-O-muh) is a noncancerous (benign) mass in the liver. A liver hemangioma is made up of a tangle of blood vessels. Other terms for a liver hemangioma are hepatic hemangioma and cavernous hemangioma. Most cases of liver hemangiomas are discovered during a test or procedure for some other condition These lesions are often metastatic, particularly if there are multiple target lesions in several abdominal organs (liver, spleen, kidneys). Due to the overlap in ultrasound appearance between benign and malignant lesions, either cytology or histology is needed for a final diagnosis Ultrasound Images & Clips. Liver metastases of a pancreatic carcinoma of the tail of the pancreas with hyper-echoic and iso-echoic lesions. The hyperechoic lesions could be mistaken for hemangiomas, but are hypoechoic in the late phase of CEUS and proved to be metastases. Liver metastases of a pancreatic carcinoma of the tail of the pancreas. Liver lesion 5.4cm atypical pain in upper right abdomen Tmmedloc I am a 43-year-old female, average weight, with a 5.4 cm lesion found in my liver after an ultrasound Ultrasound examinations of the liver and biliary tract is beneficial when the following signs are noted clinically or radiographically: icterus, microhepatica, hepatomegaly, or liver mass. For metastasis, check for multifocal neoplasia such as mast cell tumors and lymphosarcoma, and increased liver enzymes
Multiple metastatic lesions were demonstrated throughout the liver with the DAX - some well below 14 cm in depth. Contrast-enhanced ultrasound (CEUS) and Obesity The DAX transducer allows users to perform advanced applications such as contrast-enhanced ultrasound (CEUS), allowing contrast visualization to greater depths than conventional. HEPATOLOGY Artiﬁcial intelligence assists identifying malignant versus benign liver lesions using contrast-enhanced ultrasound Hang-Tong Hu,*,†1 Wei Wang,*1 Li-Da Chen,* Si-Min Ruan,* Shu-Ling Chen,* Xin Li,‡ Ming-De Lu,*,† Xiao-Yan Xie* and Ming Kuang*,† *Department of Medical Ultrasonics, Ultrasomics Artiﬁcial Intelligence X-Lab, Institute of Diagnostic and Interventional. Liver Lesions on Ultrasound. Most liver lesions are initially detected during an ultrasound. It is highly sensitive at differentiating a cyst from a solid liver lesion and serves as a good first step in diagnosing a patient. However, in order to distinguish the type of liver lesion found on an ultrasound, more advanced imaging is usually necessary of the lesion and the materials used, rather than on the anatomical localization of the lesion within the liver. Severe complications can be avoided if a close follow‑up of the patients is performed. Keywords: liver biopsy, focal liver lesion, liver carcino ‑ ma, focal nodular hyperplasia, ultrasound
Hepatic lesions. The liver presents with a variety of lesions for evaluation and appropriate triage with imaging. Ultrasound, MDCT and particularly MRI play a significant role in this objective. In patients without a known malignancy the vast majority of non-cystic lesions are benign (hemangioma, FNH, adenoma, focal fat, etc.), while a few are. minute vessels inside the lesion can be visualized at high frame rates (47 fps) and the lesion demonstrated high vascularity. Focal liver lesions can be clearly seen on non-contrast ultrasound with good image quality. Vascularity can be evaluated to some extent. However, diagnosis cannot be made without the use of contrast agent
diagnostic approaches and management of focal liver lesions (FLLs). FLLs are solid or cystic masses or areas of tissue that are identified as an abnormal part of the liver. The term lesion rather than mass was chosen because lesion is a term that has a wider application, including solid and cystic masses Liver Ultrasound - Lobulated Hypoechoic Lesion - Liver disease. A couple of days ago, I went in for a body check. Blood work all came back normal, but the ultra sound came back fatty liver, liver is normal in size and shape and is smooth outline. 3.22 cm lobulated hypoechoic lesion in the right lobe of the liver Hi, I am dazed and confused just had an ultrasound of my kidneys to follow up cyst on right kidney which lighted up on an MRI in April. Now they say simple cyst on kidney but they note that the liver lesion is still there that was seen on an ultrasound of the abdomen at about the same time as the CT and MRI but on that MRI they ruled out liver lesion said none seen
This research presents a machine vision approach to detect lesions in liver ultrasound as well as resolving some issues in ultrasound such as artifacts, speckle noise, and blurring effect. The anisotropic diffusion is modified using the edge preservation conditions which found better than traditional ones in quantitative evolution. To dig for more potential information, a learnable super. Gray scale ultrasound images revealed an approximately 2.5 cm segment 6 liver lesion with double target sign appearance, similar to CT findings (Figure 2(b)). A 19-gauge/20-gauge automatic core biopsy gun (Temno, CareFusion,Waukegan, IL) was used to ultimately obtain 4 samples via a lateral intercostal approach (Figures 2(c) and 2(d) ) Ultrasound guided percutaneous liver biopsy is a fast, economical and user-friendly procedure, frequently used in the diagnosis of focal liver lesions. The success rate of the biopsy in obtaining viable samples is high and it depends more on the structure of the lesion and the materials used, rather than on the anatomical localization of the. Hepatic cysts (HCs) are frequently discovered incidentally on abdominal imaging. The prevalence of HCs has been reported as high as 15-18% in the United States. Although most cysts are benign, some are malignant or premalignant. It is important to diagnose cystic lesions in order to properly manage them. Imaging with conventional ultrasound, computed tomography, magnetic resonance imaging. in the past. Ultrasound scanning has proven to be very useful in detecting such a lesion and a typical appearance is showninFig. 4. Fig. 5 shows a case of liver cirrhosis with ascites and such patients may presentwithjaundice. Fig. 4 Longitudinalsection along a choledochalcyst. 10
Cystic liver lesions - An ultrasound perspective. Simple hepatic cysts are benign developmental lesions that do not communicate with the biliary tree. The current theory regarding the origin of true hepatic cysts is that they originate from hamartomatous tissue. Hepatic cysts are commonand are presumed to be present in 2.5% of the population This paper focuses on the improvement of the diagnostic accuracy of focal liver lesions by quantifying the key features of cysts, hemangiomas, and malignant lesions on ultrasound images. The focal liver lesions were divided into 29 cysts, 37 hemangiomas, and 33 malignancies. A total of 42 hybrid textural features that composed of 5 first order statistics, 18 gray level co-occurrence matrices. A retrospective review was conducted of sonograms of focal liver lesions with a hyperechoic rim, as well as relative examinations such as computed tomography, magnetic resonance imaging, biopsy, resection, and histopathology reports. A cohort of 10 232 patients was found to have solid focal liver lesions (2030 malignant, 8202 benign) Congenital cystic lesions. Simple cysts. Simple cysts are the most common type of cystic liver lesion and are seen in approximately 2.5% of the population 1; they are developmental, arising from a defect in bile duct formation. On ultrasound, they are anechoic with posterior acoustic enhancement, while on CT they are of fluid attenuation.
Ultrasound of the left lobe of the liver reveals a mass in the medial segment that has a hypoechoic halo (arrows). The presence of a halo generally indicates metastatic disease. The lesion. Database we built in this study is the largest, multicentric and prospective, and standardized ultrasound image data for focal liver lesions, which ensures the quality of ultrasound images, reduces the difference between radiologists and provide the large-scale data basis for deep learning analysis
The use of contrast-enhanced ultrasound (CEUS) to assess focal liver lesions is now well established, with superb ability to characterise lesions visually. The ability to measure parameters of the CEUS examination objectively is realised by the fact that the microbubble contrast agent is truly intravascular and has a linear dose response A 51-year-old male patient from Iraq presented with symptoms of right upper-quadrant abdominal pain. Imaging showed a 9 cm, lobulated cystic lesion in the right liver lobe with thin septations, suggestive of a hydatid cyst. Although serology for hydatid disease was negative, the cystic lesion was treated by percutaneous drainage. Owing to persisting symptoms, he was re-evaluated showing the. Liver applications of contrast-enhanced ultrasound (CEUS) are increasingly reported in children. Focal liver lesions can be encountered either incidentally in asymptomatic children during routine abdominal imaging examinations (usually by US), in staging or follow-up scans of children with cancer, or in the setting of surveillance programs for chronic liver disease or other conditions that. Ultrasound Images & Clips Mixed mainly cystic liver lesion that remained unchanged over the years. Puncture revealed oily material. Presumably a dermoid cys