Ultrasound. Superficial lymph nodes, particularly in the head and neck, axilla and inguinal regions are amenable to ultrasound (US) evaluation. A normal lymph node is ovoid in shape, hypoechoic to the adjacent muscle and frequently contains an echogenic fatty hilum (Fig. 1 a).The hilum is a linear, echogenic, non-shadowing structure that contains the nodal vessels and it appears …
The thickness of this periportal low echogenicity allows the staging from Grade 0: normal, Grade 1: low parietal thickness between 3 and 5 mm and affecting at least two branches of the portal vein ...
This increase is expressed with a radiological sing called periportal halo, resulting in a periportal soft tissue hypointensity in TC, hyperintensity of signal in T2-weighted sequences in RM (3), and an increased thickness and echogenicity in ultrasound. (4,5) The periportal halo, also called periportal cuffing in ultrasound, can affect the ...
Objectives To evaluate the recent WHO's ultrasonographic diagnostic staging system of schistosomal periportal thickening/fibrosis and to assess intra/inter‐observer variation associated with its use.. Methods Local standard of portal branch wall thickness (PBWT) for height was established using 150 healthy subjects. Intra and inter‐observer variation in image pattern identification and ...
Ultrasound grading of periportal fibrosis (grade I = 3–5 mm, grade II = greater than 5–7 mm, and grade III = greater than 7 mm) correlate with the severity of disease . Richter et al. categorized hepatic fibrosis by Niamey image pattern scores ( Table 1 ) which can also be correlated with the severity of disease morbidity [35] .
Introduction: The clinical significance of the sonographic finding "periportal hyperechogenicity", which is characterized by hard periportal echoes, is largely undetermined. This phenomenon has been reported in a large number of disorders, as well as in healthy persons. Methods: A prospective study of 1853 patients revealed this finding in 12 cases.
Periportal halos are defined as circumferential zones of decreased attenuation identified around the peripheral or subsegmental portal venous branches on contrast-enhanced computed tomography (CT). These halos probably represent fluid or dilated lymphatics in the loose areolar zone around the portal …
In the Fig. 3: image pattern C (peripheral periportal thickening) Fig. 1: image pattern A (normal sonographic liver appear- ance) Fig. 4: image pattern D (central periportal thickening) Minas Gerais study normal values of this measure- ment have been established (up to 5 mm in indi- viduals with a weight up to 40 kg, and 6 mm in subjects ...
In G1, G2 and G3, periportal thickening occurred only in schistosomal patients (8.5%). Mild pathological alterations in patients that cannot yet be detected by clinical examination were detectable in the liver by ultrasound and can be due to fibrosis. The degree of mild periportal fibrosis was diminished in
Ultrasound examination. Abdominal ultrasonography was performed with the Aloka machine (Hellige, Freiburg, Germany) fitted with a convex probe of 3.5 Mega Hertz. Sonomorphological abnormalities of periportal thickening were categorised according to the Managil score 12. Organomorphometry of the liver and spleen was done according to Dittrich et ...
Periportal hyperechogenicity can result from many causes including: pneumobilia. cholecystitis. schistosomiasis of the portal region. recurrent pyogenic cholangitis (oriental) inflammatory bowel disease: has been described to give "echo-rich" periportal cuffing 2 .
Enlarged periportal lymph nodes often are noticed during imaging of the upper abdomen. Malignant infiltration and enlargement of periportal nodes occur in patients with cancers of the liver ...
and reported predominant central periportal fibrosis on ultrasound. On the other hand, Homeida et al. (1988) de - scribed periportal thickening that started in the peripheral branches and progressed towards the hilum as the disease TABLE II Differential diagnosis of schistosomal hepatic fibrosis by ultrasound
To study outcome determinants of schistosomal periportal thickening/fibrosis (PPT/F), 199 subjects (mean age = 24.0 years, range = 7-68 years), 109 with mild (image pattern C) PPT/F, 69 with moderate (image pattern D) PPT/F, and 21 with severe (image
Liver ultrasound elastography for the evaluation of periportal fibrosis in schistosomiasis mansoni: A cross-sectional study. Carvalho Santos J, Dória Batista A, Maria Mola Vasconcelos C, Souza Lemos R, Romão de Souza Junior V, Dessein A, Dessein H, Maria Lucena Montenegro S, Pessoa Almeida Lopes E, Lúcia Coutinho Domingues A PLoS Negl Trop ...
enlarged periportal bands with increased echogenicity suggesting intense periportal fibrosis (Figure 2). Evidence of portal Figure 2 - Ultrasound of the patient showing periportal thickening (yellow arrows on the left side), thickening of the gallbladder wall (G = gallbladder; yellow arrow = thickened wall) and the enlarged spleen (S).
Drug-induced injury commonly affects the gastrointestinal and hepatobiliary systems because of the mechanisms of absorption and metabolism. In pill esophagitis, injury is frequently related to direct contact with the esophageal mucosa, resulting in small superficial ulcers in the mid esophagus. Nonsteroidal anti-inflammatory drugs can lead to gastrointestinal tract ulcers and small bowel ...
It was exceeded by 6% for the main portal vein stem diameter, 13% for the left liver lobe, 12% for the right liver lobe, and 14% for the spleen length. According to the Cairo classification, 97% of the endemic population and 81% of the controls had periportal thickening of the liver, mostly grade I.
Ultrasound of the patient showing periportal thickening (yellow arrows on the left side), thickening of the gallbladder wall (G = gallbladder; yellow arrow = thickened wall) and the enlarged ...
(Left) Axial CECT in the same patient with acute viral hepatitis shows hepatomegaly, periportal edema, and porta hepatis lymphadenopathy . (Right) Axial CECT in the same patient shows massive gallbladder wall thickening and a small amount of ascites .
Image patterns A and B were considered normal, C-F corresponded to progressive degrees of periportal fibrosis and Z was used for other abnormalities. 7 Cases were only labelled with 'image pattern C' if there was clear thickening in the periphery of the parenchyma where portal branch walls should not normally be clearly visible with ultrasound.
Two ultrasound observers (M.D. and E.D.) applied the Cairo and the Managil classification (E.D. only) for the grading of periportal thickening of the liver. In spite of high prevalence and intensity of infection, severe hepatic morbidity was rare. According to the Cairo classification, there was a high percentage of subjects with grade I ...
Typical CT findings in acute cholecystitis include gallbladder distention, wall thickening, mucosal hyperenhancement, pericholecystic fat stranding or fluid, and gallstones with a sufficient attenuation difference from bile to be visualized (about 65–75%) (Figs. 1A, 1B, 2, 3A, 3B, 4A, 4B, 5A, 5B, 6, 7A, 7B).A significant fraction of mixed cholesterol or pigment stones are so similar in ...
Publicationdate . Thickening of the gallbladder wall is a relatively frequent finding at diagnostic imaging studies. Historically, a thick-walled gallbladder has been regarded as proof of primary gallbladder disease, and it is a well-known hallmark feature of acute cholecystitis.
In G1, G2 and G3, periportal thickening occurred only in schistosomal patients (8.5%). Mild pathological alterations in patients that cannot yet be detected by clinical examination were detectable in the liver by ultrasound and can be due to fibrosis.
Diffuse thickening of the gallbladder wall can occur in a number of situations: cholecystitis. acute cholecystitis. chronic cholecystitis. gallbladder empyema 7. xanthogranulomatous cholecystitis 11. acalculous cholecystitis 11. postprandial physiological state (pseudothickening) gallbladder overall decompressed.
Periportal halo or periportal collar sign refers to a zone of low attenuation seen around the intrahepatic portal veins on contrast-enhanced CT or hypoechogenicity on liver ultrasound. It likely represents periportal edema, which is often used as a synonymous term.Periportal haloes may occur around the central portal veins or their peripheral branches and occur on both sides of the portal triads.
(a) Ultrasound of right lobe of liver in acute schistosomiasis mansoni showing periportal echogenic thickening (arrow). (b) Normal ultrasound of the right lobe of the liver 6 months after ...
Features are in keeping with advanced periportal fibrosis. Patient from a country endemic with schistosomiasis. ... Ultrasound. Portal veins wall thickening and increased echogenicity. Case Discussion. Features are in keeping with advanced periportal fibrosis. ...
Thickening of the gallbladder wall, usually considered >3 mm, is a non-specific sign of various conditions.. Pathology. Gallbladder wall thickening can be caused by inflammatory, benign, and malignant etiologies. Pseudothickening caused by the normal postprandial state of the contracted gallbladder is also extremely common 5.. Thus, for all non-emergent exams, a fasting period of 6-12 …