关键词: 肝脏肉瘤, 超声造影, 病理, 诊断

Abstract: Objective To investigate contrast-enhanced ultrasound (CEUS) characteristics of primary liver sarcoma (PLS) and compare the diagnostic value between CEUS and pathology.Methods The clinical data of 3 cases with PLS diagnosed by pathology were retrospectively analyzed. The relevant literature was reviewed to summarize the diagnosis experience of CEUS and pathology.Results The characteristics of two-dimensional ultrasonography were round-like or irregular-shaped mixed echogenic masses, expansion growth with clear boundary, accompanied by cystic degeneration, necrosis or bleeding in the center. CEUS arterial phase of 3 cases showed clear boundary and envelope, among which 2 cases showed uneven slightly high or high enhancement, which internal showed the “flame” sign, and the peripheral of 1 case showed high enhancement. CEUS showed the feature of center was massive cystic necrosis or hemorrhage, with no enhancement. The lesion began to be cleared slowly in the portal phase with low enhancement, and the overall clearance rate was slower than that of liver metastatic tumor (LM), and the “black hole” sign was not observed.Conclusion PLS is mostly single solid masses with clear boundaries and its clinical symptoms are not specific. However, the CEUS features of PLS are certain, which could provide an important basis for clinical diagnosis and preoperative evaluation.However, the definitive diagnosis still depend on pathology.

Key words: Hepatic sarcoma, Contrast-enhanced ultrasound, Pathology, Diagnosis