A new diagnostic approach to biliary atresia with emphasis on the ultrasonographic triangular cord sign: Comparison of ultrasonography, hepatobiliary scintigraphy, and liver needle biopsy in the evaluation of infantile cholestasis

Comparison of different diagnostic methods in infants with Cholestasis

“…In our study, abdominal ultrasonography had sensitivity and specificity of 52.6% and 76.1% for BA, respectively. Accuracy of ultrasonography for differentiation between BA and INH in our series was 69.2%, that was lower than that reported by Lin et al [11] (sensitivity, specificity and accuracy were 86.7%, 77.1%, and 79.4%, respectively) and Park et al [12] (85%, 100%, and 95%, respectively). This lower accuracy may be due to lower experience of our sonographist for detection of triangular cord sign.…”

Acurácia diagnóstica do espessamento ecogênico periportal à ultra-sonografia e da histopatologia no diagnóstico diferencial da atresia biliar

“…Table 1 is a synthesis of the experiences with ultrasound of a selection of authors and the results of this study, with emphasis on TCS for diagnosis of BA. 4,[10][11][12][13][14] Except in the study carried out in Japan, where scans were performed by two ultrasound specialists, all of the others used single examiners.…”

“…1 The lack of specificity for BA diagnosis of classical ultrasound findings has been replaced by the prospect of improving diagnostic accuracy based on a new sign visible on US -the triangular cord sign -which was first described by Korean authors. [2][3][4][5] The triangular cord is a fibrous mass of triangular or tubular shape that is located at the cranial portion of the bifurcation of the portal vein and which is the ultrasonographic manifestation of the fibrous tissue remnant in the region of the porta hepatis. 2 Notwithstanding, with the exception of explorative laparotomy which is the gold standard, liver biopsy is considered the best diagnostic test for BA.…”

Accuracy of echogenic periportal enlargement image in ultrasonographic exams and histopathology in differential diagnosis of biliary atresia

“…A Tabela 1 é uma síntese das experiências ultrasonográficas de alguns autores e desta pesquisa, com destaque para o EEP no diagnóstico da AB 4,[10][11][12][13][14] . Exceto no estudo do Japão, em que os exames foram realizados por dois ultrasonografistas, todos os outros tiveram apenas um examinador.…”

“…Embora considerada operadordependente, é de fácil acesso, tem baixo custo, é não-invasiva e não depende da função hepática para a sua execução 1 . A inespecificidade dos achados ultra-sonográficos de outrora para o diagnóstico da AB deu lugar à perspectiva de aprimoramento da acurácia diagnóstica, através de um novo sinal visibilizado pela US -o sinal do cordão triangulardescrito por autores coreanos [2][3][4][5] . O cordão triangular consiste em uma massa fibrosa de forma triangular ou tubular situada na porção cranial da bifurcação da veia porta, que representa a expressão ultra-sonográfica do remanescente de tecido fibroso na região do porta hepatis 2 .…”