“…Primary omental malignant tumors that have been reported include leiomyosarcoma, fibrosarcoma, liposarcoma, mesothelioma, and malignant fibrous histiocytoma [13] . Secondary omental malignant tumors mostly originate from the metastasis of malignant tumors of the stomach, colon, pancreas, biliary tract, ovary, liver, etc, and the tumor size may vary [14,15] . Currently, there is no specific diagnostic method for omental tumors.…”