Lymphocele of the thoracic duct
50-year-old patient doing CT for metastatic work up for maxillary mass
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Dilated thoracic duct appearing as a non-enhancing, tubular/multicystic, multicompartmental, water density structure starting caudally from the level of the renal hila in the abdomen extending cranially towards the mediastinum till its insertion with areas of more focal dilatation mounting to cyst formation.
Left supra-clavicular fossa well-defined oval shaped cyst is seen as well.
CT picture diagnostic of lymphocele of the thoracic duct. Reviewed previous CT images two years earlier showed stationary appearance confirming the diagnosis.