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Figure 4 | World Journal of Surgical Oncology

Figure 4

From: Poorly differentiated mesenteric carcinoma of unknown primary site detected by abscess formation: case report

Figure 4

Histological and immunohistochemical findings of the tumor. Hematoxylin-eosin (HE) staining reveals poorly differentiated carcinoma (a). Alcian blue (AB) staining showed moderate production of mucin accompanied by a partial ductal structure (b). Immunohistochemistry was partially positive for CK34βE12 (about 20% of tumor) (c), positive for AE1/AE3 (d), negative for CDX2 (e), and negative for TTF-1 (f).

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