PMC3032668_01
Abdominal CT scan showing: A) infiltration of the mesentery and the peritoneum and B) ascitis and wall tickening of small bowel.
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F1
Enhanced computed tomography (CT) of the abdomen (Figure 1, 2) showed ascitis, dilated loops of small bowel with concentric mural tickening, diffuse peritoneal tickening with multiple peritoneal masses, and infiltration of the mesentery and the greater omentum.
Abdominal CT scan reveals multiple nodular masses in mesentery and small bowel causing luminal narrowing (sagittal section).
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F2
Enhanced computed tomography (CT) of the abdomen (Figure 1, 2) showed ascitis, dilated loops of small bowel with concentric mural tickening, diffuse peritoneal tickening with multiple peritoneal masses, and infiltration of the mesentery and the greater omentum.
Photomicrography of small bowel biopsy revealing: A) a infiltrate of poorly differentiated pleomorphic cells with prominent mitotic figures and scant cytoplasm (hematoxylin and eosin stain x 400) and B) Immunohistochemical stain for MPO showing staining of the tumour cells (myeloperoxidase x 400).
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F3
Histopathology (Figure 3A) showed a transmural infiltrate, extending to the adjoining mesentery, of poorly differentiated pleomorphic cells with numerous interspersed eosinophils. Immunohistochemical staining (Figure 3B) was strongly positive for MPO, lisozyme and Bc12, and negative for CD10 and Cyclin D1.