Fig. 1From: Possible relationship between fibrosis of IgG4-related thymitis and the profibrotic cytokines, transforming growth factor beta 1, interleukin 1 beta and interferon gamma: a case reportComputed tomography scanning and the removed specimen. a Preoperative computed tomography revealed a mass adjacent to the left side of the left pulmonary artery (arrow). However, there was a thin line between the mass and the pulmonary artery. b The resected specimen with one section showed a solitary mass surrounded by fat tissue. c The cut section: the mass was lobular but with no obvious fibrous septaBack to article page