The Imaging Analysis of Pulmonary Sarcodiosis

Objective: To analysis radiographic features of thoracic sarcoidosis for further understanding of the disease. Methods: 42 cases of pulmonar sarcodiosis were proved by histopathology from April 2009 to July 2014, including 13male and 29 female, and their age were from 33 year-old to 75 year-old, with an average of 50 years. All the cases underwent CT scan. Among them, 25 cases received enhanced CT scan. The imaging findings were summarized by two chest imaging physician. Results: The main CT finding of pulmonar sarcodiosis was lymphadenopathy which were seen in 38 cases (90.5%), including mediastinal and bilateral hilar lymphadenopathy (n=27, 64.3%), mediastinal and the hilar lymphadenopathy (n=5, 11.9%), mediastinal lymphadenopathy (n=6, 14.3%) and the lesion of pulmonary parenchymal without mediastinal lymphadenopathy (n=4, 9.5%). The parenchymal abnormalities in sarcoidosis were seen in 34 cases (80.9%), of which 29 cases were noudles (69.0%) and 15 cases distributed around the bronchovascular bundles (35.7%), masses (n=4, 9.5%), consolidations (n=2, 4.8%), ground-grass (n=1, 2.4%), thickening of bronchovascular bundle (n=12, 28.6%), fibrosis (n=1, 2.4%) and pelural involvement (n=10, 23.8%). Conclusion: CT manifertations of pulmonar sarcodiosis are varied, but have some specific radiographic features. A correct diagnosis can be made combined with hilar and mediastinal adenopathy.