Ziemianski A
Rofo. 1978 Feb;128(2):165-70. doi: 10.1055/s-0029-1230815.
The extent of changes in orbital veins depends primarily on the size of the space-occupying lesion. Large tumors, irrespective of their position, produced change in the orbital vein, but among small tumors only the superior and medial tumors produce slight changes in the orbital vein. Localization of the tumor is also an important factor. The superior tumors are characterized by the angle between the 2nd 3rd SOV segments not exceeding 100 degrees and by the quadrangle surface of 419 mm2 in average. The inferior tumors elicit slight changes in SOV. The medial tumors cause an increase of the angle between the 2nd and 3rd SOV segments above 130 degrees and the surface area of SOV quanrangle up to 550 mm2. The most characteristic feature of the intraconic tumors is the normal X point position. Shape of the tumor plays a minor role in producing changes in orbital veins.
眶静脉的变化程度主要取决于占位性病变的大小。大的肿瘤，无论其位置如何，都会引起眶静脉的变化，但在小肿瘤中，只有上方和内侧的肿瘤会使眶静脉产生轻微变化。肿瘤的定位也是一个重要因素。上方肿瘤的特征是第二和第三段眼上静脉（SOV）之间的夹角不超过100度，平均四边形面积为419平方毫米。下方肿瘤引起眼上静脉的轻微变化。内侧肿瘤导致第二和第三段眼上静脉之间的夹角增大至130度以上，眼上静脉四边形的表面积达550平方毫米。圆锥内肿瘤最典型的特征是X点位置正常。肿瘤的形状在引起眶静脉变化方面作用较小。
