A vascular aneurysm embolus is usually found on a postoperative pathology report, and its main implication is that the tumor has developed vascular or lymphatic metastases. There are two types of tumor growth: one is in situ growth, expansion, and invasion; the other is along the lymphatic vessels or blood vessels to reach distant metastasis. If a tumor thrombus appears in the vasculature means that the tumor has started to metastasize to distant sites, which is a late stage manifestation, and systemic chemotherapy or immunotherapy should be administered promptly in this case. Local treatment alone, including surgery, is no longer meaningful, so systemic examination should be performed to determine whether tumors have grown or existed in other parts of the body.