PMC5048109_01
Colonoscopy revealed type 2 tumor in the ascending colon, biopsy specimen revealed tubular adenocarcinoma.
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CEA serum tumor marker level was elevated to 89.3 ng/dl but CA19-9 was within the normal range. Colonoscopic examination revealed a type 2 tumor in the ascending colon (Fig. 1).
Abdominal CT revealed an irregular mass enhanced heterogeneously in the right side colon with size of 5 x 4 cm (A) and a liver tumor in the segment III (B)..
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Abdominal computed tomography (CT) revealed a 5 cm tumor enhanced heterogeneously located in the ascending colon (Fig. 2A). There was no evidence of ascites, but were swollen lymph nodes around the colon tumor and liver metastases in the segment III (Fig. 2B).
Resected specimen showed a type 2 tumor with the size of 40 x 63 mm in the ascending colon (A). Histological analysis of the resected specimen showed moderately differentiated adenocarcinoma invaded into sub serous layer (x100 H.E.) (B). The several ova of S. japonicum was detected in the muscular layer surround the tumor and sub mucosa in the adjacent colon (arrows in C and D).
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Macroscopically, the size of the tumor was 40 x 63 mm. (Fig. 3A). Histological findings showed that the tumor was moderately differentiated adenocarcinoma (Fig. 3B). Additionally, there were numbers of schistosomal ova in the muscular layer surround tumor (Fig. 3C) and also in the submucosa of adjacent mucosa (Fig. 3D).