PMC3975205_01
Transversal section of the abdominal CT scan revealed an inhomogeneous round tumor of 73 x 61 mm with sharp margins and with hypodense fatty components and enhancing soft tissue.
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F1
The mass was located mesenterially, ventrally of the musculus iliopsoas with surrounding enlarged lymph nodes (maximum diameter 12 mm) (fig. 1).
Laparotomy showed a 10-cm-large tumor, which was completely resected.
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F2
Macroscopic inspection showed a tumor with a diameter of 10 cm with a smooth capsular outer surface (fig. 2).
Histological section with HE staining of the resected myofibroblastic tumor showing spindle cell proliferation, fibrotic lymph node involvement and central necrosis. Magnification x5,000.
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F3
Immunohistochemical analysis did not reveal signs of a specific spindle cell tumor, carcinoma or malignant lymphoma (fig. 3).