Itai Y, Ohtomo K, Kokubo T, Minami M, Yoshida H
Department of Radiology, University of Tokyo Hospital, Japan.
J Comput Assist Tomogr. 1988 Nov-Dec;12(6):971-5. doi: 10.1097/00004728-198811000-00012.
Four cases of postnecrotic liver scar were examined by dynamic CT or MR imaging or both. Postnecrotic scars appeared as low-density areas on plain CT, showed marked and prolonged enhancement on single level dynamic CT, and became isodense on postcontrast scan. On T2-weighted images, postnecrotic scar were as hyperintense as the spleen. Postnecrotic liver scar is an example of localized attenuation or intensity difference not corresponding to mass lesion. It should be distinguished from mass lesions associated with lobar or segmental attenuation (or intensity) difference of the liver as well as nonmass lesions such as irregular fatty infiltration, radiation hepatitis, and hepatic infarction.
对4例肝坏死性瘢痕患者进行了动态CT或磁共振成像（MR）检查，或两者均进行了检查。肝坏死性瘢痕在平扫CT上表现为低密度区，在单层动态CT上表现为明显且持续的强化，并在增强扫描后变为等密度。在T2加权图像上，肝坏死性瘢痕与脾脏呈等高强度。肝坏死性瘢痕是一种局部衰减或密度差异的例子，与肿块病变不对应。它应与伴有肝脏叶或段衰减（或密度）差异的肿块病变以及非肿块病变如不规则脂肪浸润、放射性肝炎和肝梗死相鉴别。
