Diagnosis and treatment of benign multicystic peritoneal mesothelioma

Figure 1 Computed tomography axial image results. A: Plain computed tomography axial image showing a hypodense mass; B: Contrast enhancing computed tomography axial image demonstrating an intra-peritoneal hypodense non-enhancing tumor.

Figure 2 Intraoperative image showing a multicystic mass.

Figure 3 Histological examination revealed results. A: Mesothelial cells lining the cysts (× 400); B-F: Immunohistochemical analysis documented positive expression of mesothelial cells (B, × 400) and calretinin (C, × 400), while expressions of D2-40, CD31, and CD34 were negative (D, F, × 400).