05.08.2023 | Special Feature: Review Article
Contrast-enhanced endoscopic ultrasound for swollen lymph nodes
verfasst von:
Tanyaporn Chantarojanasiri, Thawee Ratanachu-ek, Eizaburo Ohno, Yoshiki Hirooka
Erschienen in:
Journal of Medical Ultrasonics
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Abstract
Endoscopic ultrasound (EUS) is an important tool for the evaluation of lymphadenopathy, especially in intra-thoracic or intra-abdominal regions. EUS also provides tissue diagnosis via EUS fine-needle aspiration or biopsy. To select the target for biopsy or aspiration, conventional B-mode images are used for the evaluation, but this approach still lacks diagnostic accuracy. Contrast-enhanced EUS has been used to evaluate the vascularity of lesions. Most malignant lymphadenopathy shows heterogenous enhancement or defect of enhancement, while quantitative studies using time-intensity curves in contrast-enhanced harmonic EUS show a rapid decline in enhancement pattern. These findings are useful as an auxiliary method for tissue diagnosis or in cases in which tissue diagnosis is contraindicated.