Intra-abdominal inflammatory myofibroblastic tumor: Spontaneous regression

Figure 1 Computed tomography imaging changes of patient No. 1 A: A plain computed tomography (CT) scan on admission showing a large nodular mass (white lines mark the maximum and minimum diameter) located in the upper quadrant of the peritoneum and encasing the surrounding soft tissues; B: An enhancement CT scan showing the mass to be multinodular. Some parts of the mass were mildly enhanced, while others were cystic degenerated; C: A CT scan obtained 3 wk after the operation identified the spontaneous regression of the tumor; D: A CT scan obtained 3 mo later did not show any indication of relapse.