The Sonographic “Bright Band Sign” of Splenic Infarction

Abstract

The bright band sign is a potentially useful sonographic sign of splenic infarction, which may confer additional sensitivity and specificity and may be particularly helpful with infarcts having nonclassic appearances.

“Bright Band Sign” A Grayscale Ultrasound Finding in Hepatic Infarction

“…However, abscesses typically display thickened walls . The bright band sign can be a helpful diagnostic sign to differentiate infarcts from abscesses similar to the sign described in the spleen by Llewellyn et al Clinical history and abnormal laboratory values such as elevated serum alanine aminotransferase levels, whichhas been shown to be a sensitive marker for dearterialization injuries within the liver, can aid in the diagnosis. Contrast‐enhanced sonography, contrast‐enhanced CT, or contrast‐enhanced magnetic resonance imaging studies can also be obtained for further characterization for vessel patency and parenchymal enhancement as clinically required in these patients.…”

“…Acinar zone 2 is located in between. Recently, the bright band sign of splenic infarction was identified, which correlated with intact fibrous trabeculae in splenic infarcts and was not seen in normal or abnormal control patients . We would like to introduce the bright band sign as a useful grayscale ultrasound feature for liver infarction.…”

“…A recent study described a newly recognized “bright band sign” within splenic infarcts. The authors described echogenic bands resulting from specular reflections returned from intact fibrous trabeculae within splenic infarcts, which was seen in close to 92% of their splenic infarct case series of 37 patients . The bright band sign may be a useful sign to increase the sensitivity and specificity of sonography in the diagnosis of splenic infarction.…”

Massive Splenic Infarction with Specific Sonographic Feature: Two Case Reports with Rare Etiologies

“…For massive splenic infarcts, in a retrospective Llewellyn, et al study, they noticed highly reflective bright linear bands within lesions (bright band sign) that had the classic appearance of splenic infarcts [18,19]. In our cases, the sonographic appearances of massive splenic infarction were: 1) Normal size or mild enlargement of the spleen; 2) Diffuse hypoechogenic of the splenic parenchyma with interspersed hyperechoic linear striation; 3) Subcapsular of irregular homogenous hyperechoic or hypoechoic area; 4) Absence of vascular flow is observed in color Doppler.…”

Splenic infarct presenting as acute chest pain

“…However, there are various imaging modalities that aid clinical investigation. In sonographic imaging, acute SI appears as a peripheral wedge hypoechoic lesion [13]. Computerized tomography (CT) with contrast is preferred over sonography due to better resolution of splenic lesions.…”