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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Am J Surg Pathol. 2019 Mar;43(3):314–324. doi: 10.1097/PAS.0000000000001167

Figure 1:

Figure 1:

Inflammatory myofibroblastic tumor with TFG-ROS1 fusion (case 2). Biopsy on Panel A and B, thoracoscopic biopsy on Panel C, D, E and F. The needle biopsy (Panel A and B) showed a dense plasma cell infiltrate and elevated numbers of IgG4 positive cells (not illustrated). The thoracoscopic biopsy (panel C and inset) although less inflamed, shows prominent stromal cells with atypia. Diffuse increase in IgG4 positive plasma cells (immunohistochemical stain for IgG4) (Panel D). Panel E inset shows a focus of obliterative phlebitis (* highlights the outlines of the obliterated vein). The obliterated vein is highlighted on an elastic stain (Panel F).