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Figure 2: Histological section showing irregular, infiltrating nodules with an intervening dense hyaline stroma (a, H&E; 40×). The nodules are composed of highly convoluted and compactly curled blood vessels producing slit-like spaces (b, H&E; 400×). The cells are immunoreactive with FLI1 (c, 400×) and CD31 (d, 400×)

Figure 2: Histological section showing irregular, infiltrating nodules with an intervening dense hyaline stroma (a, H&E; 40×). The nodules are composed of highly convoluted and compactly curled blood vessels producing slit-like spaces (b, H&E; 400×). The cells are immunoreactive with FLI1 (c, 400×) and CD31 (d, 400×)