PMC3199108_01
Preoperative CT examination of the patient.
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Computed tomography of the thorax was normal, while the one of the abdomen and the retroperitoneal space revealed a tumor within the lesser pelvic cavity in the proximity of the small intestine (Figure 1).
Intraoperative finding.
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At surgery, we found a tumor mass originating from the wall of the small intestine (jejunum), invading the mesentery (Figures 2 and 3).
Intraoperative finding.
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fig3
At surgery, we found a tumor mass originating from the wall of the small intestine (jejunum), invading the mesentery (Figures 2 and 3).
Microscopy with H and E staining x40, left up x400.
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Microscopically, the tumor mass had a submucosal location, and it had invaded the muscular layer with no signs of serosal, perineural, or vascular invasion (Figure 4).
Immunohistochemistry with vimentin (left) and CD 68/100 (right).
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Mitotic figures were pronounced immunohistochemically, and the tumor cells were positive to vimentin and CD-68 antigen but negative to desmin, S100 protein, cytokeratins AE1/AE3, CD117, and CD34 antigen (Figure 5).