PMC9852721_01
Ct scan showing a large cystic tumor in the lower abdomen with an unevenly thickened cystic wall, the solid component of the tumor (red arrow, A), and mural nodules (red arrow, B) with enhancement in the arterial phase. MRI revealed a large cystic tumor with an internal fluid signal (C). CT, computed tomography; MRI, magnetic resonance imaging.
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F1
Enhancement was noted in the cyst wall and mural nodules during the arterial phase (Figures 1A,B). Magnetic resonance imaging (MRI) revealed a large cystic tumor with an internal fluid signal (Figure 1C).
Intraoperative photograph showing a large cystic tumor arising from the ileum (A), communicating with the ileum via a small intestinal fistula (red arrow, A,B). The red arrow indicates the thickening of the cystic wall, which was the solid component of the tumor (red arrow, C). The last photo shows pus within the tumor (D).
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F2
Further examination revealed that the tumor communicated with the intestinal lumen via a mucosal fistula (Figure 2).
Hematoxylin and eosin staining showing a large number of spindle cells (10 x 10, A). Immunohistochemical staining showing tumor cells positive for c-kit (B) and DOG-1 (C).
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F3
The tumor was sent for frozen sectioning, revealing proliferated spindle-shaped tumor cells (Figure 3A). Immunohistochemical staining showed that the tumor cells were positive for c-kit, DOG-1, CD34, and vimentin but negative for S-100 (Figures 3B,C).