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(a, b) Hematoxylin and Eosin staining of the pancreatic tumor in the pancreatic tail retrieved by endoscopic ultrasonography-guided fine needle aspiration (EUS-FNA) (a: ×100, b: ×200). Noncaseating granulomas and collagen fiber surrounding noncaseating granulomas are shown. (c) The noncaseating granulomas were positive for CD68 on immunostaining.
