Figure 1. Positron emission tomography (PET)/computed tomography (CT) showed abnormal accumulation in the spleen, the para-aortic and Virchow’s lymph node, the intestine, and the pouch of Douglas (arrows).
Figure 2. Computed tomography revealed small bowel wall thickening (arrow), which caused a mechanical bowel obstruction. At surgery, peritoneal dissemination and ascites were confirmed. The patient underwent a partial resection of the intestine.
Figure 3. Pathological examination of the resected intestine showing features of high-grade serous carcinoma characterized by papillary and solid growth patterns (a). Immunohistochemical analysis showing positive staining for the PAX8 (b), WT-1 (c), and p53 (d).