Figure 2

The histopathological characteristics of the lesion. The lesion showed extensive coagulative necrosis. However, alveolar septum existed in some areas, in which some medium-sized atypical lymphoid cells with round to slightly irregular nuclei disseminated. Moreover, some tumor cells were angiocentric and angiodestructive. Mitotic figures were easily found. (Figure 2A, 200×; Figure 2B, 200×; Figure 2C, 400×; Figure 2D, 200×).