Figure 4
From: Hepatobiliary cystadenocarcinoma without mesenchymal stroma in a female patient: a case report
Pathological findings from the resected lesion. (A) Photograph of the pathologic specimen shows well-differentiated biliary cystadenocarcinoma characterized by columnar cells arranged in papillary structures (original magnification × 100). Note that there is no ovarian stroma present. (B) Perineural invasion of the tumor cells is observed in some parts of the tumor (hematoxylin & eosin staining, original magnification × 200).