PMC3180864_01
CT scan of the chest revealing a large heterogenous mass in the anterior mediastinum.
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fig1
Histology revealed a poorly differentiated trabecular neoplasm highly suggestive of a peripheral neuroectodermal tumor (Figure 1). 
Pathology slide revealing a CD99+ poorly differentiated trabecular neoplasm consistent with a neuroendocrine tumor.
CRIM2011-407523.002.jpg
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fig2
The appearance of tumor heterogeneity on imaging represents areas of hemorrhage and necrosis, as was the case in our patient's large lesion (Figure 2).