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Figure 2: (a) Section shows an encapsulated tumor arising from pancreas comprised of small round tumor cells arranged in acinar and lobular pattern (H and E, ×20). (b) Section shows uniform small round tumor cells with stippled chromatin. There is no evidence of mitotic activity (H and E, ×400). (c) Section shows cytoplasmic expression of VIP in tumor cells, immunohistochemistry with DAKO antibody (DAB, ×40). (d) Section shows cytoplasmic expression of VIP in tumor cells, immunohistochemistry with DAKO antibody (DAB, ×400)

Figure 2: (a) Section shows an encapsulated tumor arising from pancreas comprised of small round tumor cells arranged in acinar and lobular pattern (H and E, ×20). (b) Section shows uniform small round tumor cells with stippled chromatin. There is no evidence of mitotic activity (H and E, ×400). (c) Section shows cytoplasmic expression of VIP in tumor cells, immunohistochemistry with DAKO antibody (DAB, ×40). (d) Section shows cytoplasmic expression of VIP in tumor cells, immunohistochemistry with DAKO antibody (DAB, ×400)