TY - JOUR T1 - Radiology corner JF - Breathe JO - Breathe SP - 335 LP - 338 DO - 10.1183/20734735.134117 VL - 13 IS - 4 A2 - , Y1 - 2017/12/01 UR - http://breathe.ersjournals.com/content/13/4/335.abstract N2 - Case 1A 35-year-old female presents with fatigue.1. What is the main abnormality? a) Lung parenchymal abnormalityb) Pleural abnormalityc) Bony abnormalityd) Lymphadenopathye) Normal appearances Case 2A 41-year-old female intravenous drug user presents with fever and cough.1. Which of the following is the most probable cause for these radiographic appearances? a) Pulmonary infarctsb) Pulmonary tuberculosisc) Sarcoidosisd) Fungal infectione) Metastases Case 11. d) Lymphadenopathy. There is bilateral hilar lymphadenopathy in this patient who was diagnosed with stage 1 sarcoidosis. In addition, there are enlarged nodes within the aorto–pulmonary window and right paratracheal region.The main differential diagnoses for mediastinal lymphadenopathy include: SarcoidosisTypically results in bilateral symmetrical involvement of hilar and paratracheal nodes.TuberculosisUsually unilateral and associated with ipsilateral parenchymal disease.LymphomaTypically results in bilateral asymmetrical lymphadenopathy and frequently affects the anterior mediastinal and retrosternal nodes.NeoplasiaDue to nodal disease spread. Most commonly primary bronchogenic carcinoma, usually unilateral and can be very extensive with small cell carcinoma.Also occurs with nodal spread from other primary cancers including oesophagus, breast and thyroid.Case 21. b) Pulmonary tuberculosis. The main abnormality is the presence of multiple small miliary nodules throughout both lungs (blue arrows in the figure) … ER -