PMC3636964_01
ICCC. a Tumor showed glandular appearance with prominent desmoplastic stroma. HE. x2. b Perineural invasion of ICCC. KS-Giemsa. x20.
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F1
ICCC of the left lobe (fig. 1). Mitotic figures were low, 1 mitosis per 50 high-power fields was found.
Immunohistochemical staining of the GIST. a CD117 staining. x2. b NSE staining. x20. c S-100 staining. x20.
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F2
Immunohistochemically, tumor cells showed strong positivity for CD117, BCL2, alpha-actin, NSE, S-100, and focally for CD34 (fig. 2).
Bone marrow aspirate. Biomorphic blast population, one resembling lymphoblasts and the other myeloblasts. May-Grunwald Giemsa. x1,000.
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F3