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  Indian J Med Microbiol
 

Figure 4: Microscopy showing the lumen of trachea completely replaced by fibrocollagenous stroma with some cysts and vascular spaces. (H and E, 50)

Figure 4: Microscopy showing the lumen of trachea completely replaced by fibrocollagenous stroma with some cysts and vascular spaces. (H and E, 50)