Histopathological features of the proliferation. A) ill-defined sheets of pleomorphic round to polygonal epithelioid cells, infiltrating adjacent liver. The cytoplasm abundant clear to eosinophilic, with distinct borders. B) The nuclei were round to oval with finely vesicular chromatin and small nucleoli. Focal nuclear pleomorphism was observed. H&E. A, × 100, B, × 200.