case_images: PMC11128548_01
case_images: Ultrasound image of the tumor. (A) There is a separation in the mass, and the wall thickness is not smooth. (B) A weak light spot is seen in the mass, and there is no blood flow signal in the mass.
case_images: fonc-14-1341506-g001.jpg
case_images: PMC11128548_01_fonc-14-1341506-g001.jpg
case_images: f1
case_images: There were no obvious blood flow signals in the cyst wall and cyst ( Figure 1 ).
case_images: Seen during laparoscopy. (A) The omental tumor was large and ruptured bleeding was visible. (B) The uterus can be seen behind the omental mass, and metastatic nodules can be seen on the abdominal wall.
case_images: fonc-14-1341506-g002.jpg
case_images: PMC11128548_01_fonc-14-1341506-g002.jpg
case_images: f2
case_images: Laparoscopic examination during the operation showed that the dense adhesion of the greater omentum and intestine formed an approximately 15 cm x 15 cm fillet-like mass, purplish red, with bleeding and necrosis ( Figure 2 ).
case_images: Pathological manifestations of extrarenal rhabdoid tumor of the greater omentum. (A) Microscopically, the tumor showed solid flake and nest distribution, infiltrative growth, round or oval tumor cells, rich cytoplasm, eosinophilia, large nucleus, deviation, vesicular chromatin, obvious nucleoli, easy mitosis, and poor adhesion of tumor cells in some areas. It can be seen that the rhabdomyosus-like cells with nuclear deviation and strong eosinophilic cytoplasm have necrosis. (B) Immunohistochemical results showed CK-pan positive in tumor cells. (C) The immunohistochemical results showed that the tumor cells were negative for INI1. (D) The results of immunohistochemistry showed that the tumor cells were Vimentin positive.
case_images: fonc-14-1341506-g003.jpg
case_images: PMC11128548_01_fonc-14-1341506-g003.jpg
case_images: f3
case_images: After the general discussion in the Department of Pathology, combined with the results of immunohistochemistry, the malignant tumor of the greater omentum was consistent with the malignant extrarenal rhabdoid tumor ( Figure 3 ).