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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Thorac Oncol. 2014 Jul;9(7):1036–1040. doi: 10.1097/JTO.0000000000000177

Figure 1.

Figure 1

B7-H1-positive malignant mesothelioma, sarcomatoid type: Neoplastic spindle cells are growing in a haphazard and tumefactive pattern (A, A insert). The neoplastic cells show diffuse and strong membranous and cytoplasmic expression of B7-H1 (B, B insert). B7-H1-positive malignant mesothelioma, epithelioid type: Neoplastic epithelioid cells are invading into adipose tissue (C, C insert). The neoplastic cells are strongly and diffusely positive for B7-H1 with a predominant cytoplasmic and focal membranous staining pattern (D, D insert). B7-H1-negative malignant mesothelioma, biphasic type: Neoplastic spindle cells are growing in a tumefactive pattern. Islands of neoplastic epithelioid cells are also present (E, E insert). The neoplastic cells are negative for B7-H1 (F, F insert). Magnification × 100 (A-F), × 400 (A-F-inserts).