Ultrasound and CT Findings of Hepatic Amebic Abscess

阿米巴性肝膿瘍之超音波及電腦斷層表徵

蔡伯邦(Po-Pang Tsai) ； 李三剛(San-Kan Lee) ； 蔡志文(Jyh-Wen Chai) ； 熊小澐(Siu-Wan Hung) ； 蘇友吉(Yeou-Gie Su)

《中華放射線醫學雜誌》 21卷3期 (1996/06) Pp. 123-129

摘要

在1982年至1995年間，本院收集35個經驗血或病理證實為阿米巴性肝膿瘍之病例。病人年齡自2歲至75歲不等，常因發燒、戰慄或右上腹疼痛來院求診。影像學上之表徵不具專一性，但可提供證據輔助診斷，然而確切診斷仍須靠血清學檢查。病灶部位多在肝臟右葉，亦可出現在肝臟左葉或尾葉，其中13位病人(37%)俱有多發性病灶。超音波主要發現為界限清楚、均勻之低回音病灶，合併病灶後回音增強現象。常見電腦斷層檢查表徵為界限明顯之囊狀病灶，可能合併病灶壁上之不規則結節或出現中膈。早期診斷阿米巴性肝膿瘍可避免後遺症發生及不必要之手術或引流。

關鍵字

阿米巴病 ； 肝，膿瘍 ； 肝，電腦斷層 ； 肝，超音波

並列摘要

A series of 35 patients who had hepatic amebic abscess was presented. Thirty-six sonograms in 27 patients and 27 computed tomographic (CT) scans in 23 patients were reviewed. Abnormalities were detected in all cases. The imaging appearance of the lesions varied from well-defined, rounded cavities to ill-defined borders with heterogeneous content, indistinguishable from other hepatic abscesses or even neoplasms. The most common ultrasonographic finding was a well-defined homogeneous hypoechoic lesion with posterior enhancement in the peripheral portion of liver parenchyma. The most common CT finding was a well-defined cystic lesion with nodularity or mild septation of wall. No gas was present in these lesions. A peripheral hypodense rim was seen in 22%. However, no pathognomonic sign of amebic liver abscess could be found on CT.

並列關鍵字

Amebiasis ； Liver, abscess ； Liver, CT ； Liver, US