PMC4095889_01
In situ liver tumor and thoracic cavity. Note the multiple tumor nodules and enlargement of liver which nearly fills the abdominal cavity. Thymic and pleural petechiae are also present.
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F1
Multiple tumor nodules up to 2 cm in size were present throughout the liver (Figure 1). There were petechiae on the visceral pleura, epicardium, and thymus (Figure 1).
A) Liver tumor with infiltrating borders, low power, H and E (100x). B) Cavernous vascular channels were present focally within the tumor mass. Low power H and E (100x).. C) Plump, bland endothelial cells lining tumor vascular channels. High power, H and E (400x).
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F2
Microscopic sections of the liver neoplasms (Figure 2) showed an infiltrative, richly vascular tumor with dilated vascular channels of varying caliber, lined by a single layer of endothelial cells surrounded by loose connective tissue.