This case brings the appearances of mediastinal lymphadenopathy related to sarcoidosis without lung involvement (equivalent to stage 1). Note that the distribution of the nodes is relatively symmetrical, feature not commonly seen on lymphoma, although this is still a less likely differential diagnosis. Neck lymph-node biopsy has confirmed a granulomatous process. 

Further workup with liver lesion has not shown any abnormalities in the segment IV (images not available).