Gross B H, Spizarny D L, Granke D S
Department of Radiology, University of Michigan Hospital, Ann Arbor 48109-0300.
Radiology. 1988 Mar;166(3):717-9. doi: 10.1148/radiology.166.3.3340767.
Chest radiographs of 12 patients revealed an oblique, predominantly cephalocaudal linear opacity in the anterior inferomedial aspect of the right lung. Correlation with high-resolution computed tomography in two patients indicated that this opacity represented a sagittal orientation of the anterior minor fissure, with resultant inferomedial curving of the right upper lobe of the lung along the right border of the heart. The sagittal anterior minor fissure may extend inferiorly to the right hemidiaphragm and merge superiorly with the horizontal minor fissure. Autopsy findings in one case showed that this anatomic variant may explain potentially confusing radiographic manifestations of disease in the anterior segment of the right upper lobe of the lung and in the medial segment of the right middle lobe of the lung.
12例患者的胸部X线片显示，右肺前下内侧有一条斜行、主要呈头足向走行的线状致密影。对2例患者的高分辨率计算机断层扫描结果显示，该致密影代表前小裂的矢状位走行，导致右肺上叶沿心脏右缘向内下弯曲。矢状位的前小裂可能向下延伸至右半膈，并向上与水平小裂汇合。1例尸检结果表明，这种解剖变异可能解释右肺上叶前段和右肺中叶内侧段疾病在影像学上可能令人困惑的表现。
