Hahn P F, Stark D D, Ferrucci J T
Department of Radiology, Massachusetts General Hospital, Boston 02114.
Gastrointest Radiol. 1992 Spring;17(2):173-4. doi: 10.1007/BF01888539.
The histologic nature of the bright ring ("peritumoral edema") around some liver metastases on T2-weighted magnetic resonance (MR) images is controversial. In the case reported, particles of the iron oxide contrast agent AMI-25 are retained in the peritumoral zone of a colon cancer metastasis, causing the bright ring to disappear. The location of iron particles in resected specimens could be used systematically to study peritumoral edema.
T2加权磁共振（MR）图像上某些肝转移瘤周围亮环（“瘤周水肿”）的组织学性质存在争议。在报道的病例中，氧化铁造影剂AMI-25的颗粒保留在结肠癌转移灶的瘤周区域，导致亮环消失。切除标本中铁颗粒的位置可用于系统研究瘤周水肿。
