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Enlarged cisterna chyli diagnosed with ultrasonography – case report

Wojciech Łyczek1, Bartosz Migda2, Michał Kutyłowski3

Affiliation and address for correspondence
J Ultrason 2022; 22: e196–e199
DOI: 10.15557/JoU.2022.0032
Abstract

Aim of the study: We present a case report of enlarged cisterna chyli in a 25-year-old woman. The diagnosis was made during a routine abdominal ultrasound examination and afterwards verified with contrast-enhanced MRI. Case description: Ultrasound revealed a large, lobulated, anechoic cystic structure with thin, smooth walls, lacking any solid components. The lesion was located in the retroperitoneal space, beneath the head of the pancreas, between the partially compressed inferior vena cava and the aorta, extending almost to the aortic bifurcation. We performed a contrast-enhanced MRI examination which confirmed the sonographic suspicion of enlarged cisterna chyli, showing a non-enhancing cystic lesion in continuity with the thoracic duct. Conclusions: Anatomy, sonographic and magnetic resonance appearance of cisterna chyli as well as differential diagnosis are discussed.

Keywords
ultrasonography; lymphatic system; thoracic duct