Contrast-Enhanced Endoscopic Ultrasonography for Pancreatic Tumors

Figure 2

Correlation of early-phase CE-EUS findings (b) and staining data in serial sections of resected pancreatic cancer tissue (c–f): a case of the isovascular tumor. (a) Pancreatic lesion was detected as a low echoic lesion (arrow) with B-mode EUS. (b) Early-phase CE-EUS image reveals isovascular tumor (arrow) with homogeneous enhancement. (c) Resected tumor specimen (arrow) without necrotic tissue: hematoxylin-eosin staining (original magnification ×1). (d) Cytokeratin staining revealed that the isovascular area on CE-EUS was composed of a homogeneous population of tumor cells (original magnification ×1). (e) Masson trichrome staining showed no fibrous tissues in the area (arrow) (original magnification ×1). (f) Homogeneous area of abundant vessels was observed on elastica van Gieson staining (original magnification ×1).

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