Fig. 2

Pathological examination (A, Hematoxylin-eosin Stain, Original Magnification 10×) revealing a well-circumscribed nodular with adjacent uninvolved pulmonary parenchyma. Spindle-shaped cells with poorly defined cell borders arranged in whorls (B, 20×). On immunohistochemistry, The tumor cells stained positive for EMA (C, 20×) and vimentin (D, 20×), and negative for TTF1 (E, 10×). Ki-67 index was less than 5% (F, 20×). These findings are supporting the diagnosis of pulmonary meningioma