Mediastinal mass mimic

Answers The CT scan shows a heterogeneous-enhancing posterior mediastinal mass with a tiny calcific focus extending from left hilum to left paravertebral region, encasing the descending aorta, left main pulmonary artery, left inferior pulmonary vein, and the subsegmental bronchus of superior segment of left lower lobe [Figure 2]a and [Figure 2]b. Multiple centrilobular nodules and fibrobronchiectatic changes are seen in lingula [Figure 2]c.Posterior mediastinal mass is due to granulomatous fibrosing mediastinitis (FM). The differential diagnoses of a posterior mediastinal mass are metastatic carcinoma, lymphoma, neurogenic tumors, and rarely fibrosing medistinitis. Since our patient was young without any smoking history, malignancy was unlikely. [...]granulomatous mediastinal fibrosis is a radiological diagnosis.