Korean J Gastroenterol.
2000 May;35(5):644-648.
Gastric Submucosal Tumors Showing Contrast Enhancement After
Injecting Levovist in Endoscopic Ultrasonography
Abstract
- Contrast enhancing media has been mainly used in enhancing the color
doppler signal so far. Since conventional abdominal ultrasonography can not
detect the small particles of contrast enhancer due to its low frequency range,
it was rarely used in B-mode imaging. However, endoscopic ultrasonography (EUS)
with a high frequency range can detect the particles and produce a
contrast-enhancing effect when injecting a contrast enhancer such as Levovist.
Gastric submucosal tumor shows various ultrasonograpic features, depending on
histopathology, but its differential diagnosis is limited. We experienced two
cases where the enhancing features on EUS for submucosal tumors were recognized
by using Levovist and this helped preoperative prediction of differential diagnosis.
The use of contrast enhancer such as Levovist during EUS of submucosal tumor
enables us to learn the hemodynamic features of the tumor. Therefore,
the differential diagnosis and prediction of the characteristics of
the submucosal tumor are possible with this helpful modality.