[Atypical radiologic image of pulmonary sarcoidosis as a diagnostic problem]

Sarcoidosis is a multisystem disorder of unknown cause frequently presenting with hilar lymphadenopathy, pulmonary infiltration, ocular and skin lesions. Multiple circular or oval pulmonary dentisties appear in the less than 5% of patients. We describe 4 sarcoidosis cases with multiple or single tumor lesion. These patients were referred to our department with initial diagnosis of metastatic or primary lung malignancy. Two of them presented the picture of multiple tumors and two had single peripheral lung mass with hilar lymphadenopathy. This report shows difficulties in the diagnosis of the interstitial lung diseases when the radiological pattern mimics malignancy.