Department of Ultrasound, Shengjing Hospital of China Medical University, 36 Sanhao St, Heping District, Shenyang, 110004, Liaoning Province, China.
BMC Gastroenterol. 2021 Jan 25;21(1):35. doi: 10.1186/s12876-021-01608-9.
To summarize the characteristics of solitary necrotic nodules (SNN) in the liver observed under contrast-enhanced ultrasonography (CEUS).
Conventional ultrasonography (US) and CEUS were performed in 24 patients who were confirmed to have SNN by pathological assessment. The US data and dynamic enhancement patterns of CEUS were recorded and retrospectively analyzed.
Ten of 24 patients underwent surgical resection, while the other 14 patients underwent a puncture biopsy to be confirmed as SNN. Among the 24 patients, 13 patients had a single lesion and 11 patients had multiple lesions. The largest lesion was selected for CEUS examination for patients with multiple lesions. Eleven patients presented no enhancement in all three phases, while the other 13 patients presented with a peripheral thin rim-like enhancement in the arterial phase, an iso-enhancement in the portal phase and delayed phase. However, no enhancement in the interior of the lesions was detected during three phases of CEUS.
SNN has characteristic findings on the CEUS, which play an important role in the differential diagnoses of liver focal lesions.
总结在超声造影（CEUS）下观察到的肝脏孤立性坏死结节（SNN）的特征。
对 24 例经病理评估证实为 SNN 的患者进行常规超声（US）和 CEUS 检查。记录 US 数据和 CEUS 的动态增强模式，并进行回顾性分析。
24 例患者中，10 例行手术切除，14 例行穿刺活检以明确为 SNN。24 例患者中，13 例为单发，11 例为多发。对于多发病灶患者，选择最大病灶进行 CEUS 检查。11 例患者在三相均无增强，而另外 13 例患者在动脉期表现为边缘薄环状增强，门静脉期和延迟期呈等增强。然而，在 CEUS 的三相均未发现病灶内部增强。
SNN 在 CEUS 上具有特征性表现，对肝脏局灶性病变的鉴别诊断具有重要作用。
