We present the case of a female patient age 32, with no medical history, presenting with chest pain and asthenia. Chest X-ray and CT scan revealed multiple nodular shadows in both lungs, suggesting lung metastasis. Bronchoscopy and broncho-alveolar lavage didn't reveal any malignant cells. Clinical examination and lab examinations didn't find any primitive extra-pulmonary tumor. Open lung biopsy was performed, revealing sarcoidosis. Patient received oral steroids, with significant radiologic improvement after only 1 month.