Diagnosis of colonic amebiasis and coexisting signet-ring cell carcinoma in intestinal biopsy

Figure 6 Biopsy-based diagnosis of signet-ring cell adenocarcinoma was confirmed by histology of the resected specimens. A, B: Microscopy (A: HE stain, × 40, B: HE stain, × 20) of surgical specimens demonstrating infiltration of the colonic wall by signet-ring cells; C, D: The tumor involves the cecum (C: HE stain, × 4) and the appendix (D: HE stain, × 4); E, F: Microscopy showing metastases to the ovary (D: HE stain, × 10) and lymph nodes (E: HE stain, × 10).