Contrast-Enhanced Endoscopic Ultrasonography for Pancreatic Tumors

Figure 3

Correlation of early-phase CE-EUS findings (b) and staining data of serial sections of resected pancreatic cancer tissue (c–f): a case of the hypovascular tumor. (a) Pancreatic lesion was detected as a low echoic lesion (arrow) with B-mode EUS. (b) CE-EUS revealed hypovascular tumor (arrow) with heterogeneous enhancement in early-phase image. (c) Resected tumor specimen (arrow) with necrotic area (arrowhead): hematoxylin-eosin staining (original magnification ×1). (d) Cytokeratin staining revealed heterogeneous tumor cells (original magnification ×1). (e) Masson trichrome staining disclosed the presence of fibrous tissues (arrow) (original magnification ×1). (f) Few vessels were observed on elastica van Gieson staining (original magnification ×1).

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