肝外胆管肿瘤的超声诊断

本文描述了20例肝外胆管肿瘤的声象图表现,归纳为直接征象和间接征象二大类。诊断符合率达90％。20例中,经病理学确诊为早期癌的3例,即2例壶腹癌和1例胆管癌伴胆囊腺瘤。就声象图的特征来说,晚期癌肿绝大部分表现为结节状和扁平状增厚的强回声灶。早期癌表现为乳头状或息肉状的突起,回声较高,这种乳头状的增生物往往是腺癌与腺瘤的中间状态。早期壶腹癌呈直径20mm以下的低回声肿块。这些早期肿瘤用其它检查法都很难查出。

ULTRASONOGRAPHY IN TUMORS OF EXTRA-HEPATIC BILE DUCT

This paper describes 20 ultrasonographies of extrahepatic bile duct cancer (EHBD). The echographic findings consist of two types-direct and indirect features. Correct rate is 90%. Among 20 cases, histopathology revealed 3 early cancers, 2 ampullary cancers and 1 bile duct cancer associated with gallbladder adenoma . The echographic characteristics showed advanced carcinoma in most nodular and flat thick shapes with strong echos. The papillara or polypid of high echo level nodules tend to present early cancers, the nature of which is between adenoma and infiltrating cancer. The diameter of early ampullary cancer is less than 20 mm in size and echographic feature has a low echo level mass . This early tumor has not been found by other examinations so far.