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Radiology, Vol 166, 717-719, Copyright © 1988 by Radiological Society of North America

ARTICLES

Sagittal orientation of the anterior minor fissure: radiography and CT

BH Gross, DL Spizarny and DS Granke
Department of Radiology, University of Michigan Hospital, Ann Arbor 48109-0300.

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.


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Obliquely Oriented Superior Accessory Fissure of the Lower Lobe of the Lung: CT Evaluation of the Normal Appearance and Effect on the Distribution of Parenchymal and Pleural Opacities
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[Abstract] [Full Text]


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