Fig. 9

A 66-year-old female patient affected by sarcoidosis, which involves mediastinal and abdominal lymph nodes (histologically proven). Unenhanced abdominal CT image (Fig. 9a) demonstrate enlarged lymph nodes (white arrows), located in perihepatic region and close to the liver hilus; inside these lymph nodes, very small calcifications are recognizable (black arrowheads). Chest CT-scan shows mediastinal lymphadenopathy, with some punctate calcifications (white arrowhead on Fig. 9b). After contrast administration, both CT and MRI acquisitions show inhomogeneous enhancement of enlarged lymph nodes (white arrowheads on Fig. 9c and d)