1. The vascular plexus at the lower part of the villi had the characteristics of recti mini vessels and protal vesselas.
   绒毛下部血管表现为微直血管形态，可能部分具有门静脉性质。
2. Methods Spiral CT appearances of 18 cases with PSPH were reviewed and compared with those of 30 cases with protal hypertension (PH),especially perigastric collateral channel formation were evaluated.
   方法回顾性分析18例PSPH的螺旋CT表现,并以30例肝炎后门静脉高压(PH)作为对照,着重观察胃周侧支静脉开放情况。

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