Cardiothoracic Imaging
Contents Anatomy Techniques Findings Cases References


Image finding: Soft tissues, male


Most postero-anterior (PA) chest films (labeled as such because of the direction of the X-ray photons from X-ray tube through the body to the film) are obtained with the shoulders elevated and therefore the soft tissues of the shoulder and scapula less evident in the upper corners of the film.

The pyramid-shaped lung spaces in the thorax create a more transparent pulmonary pattern toward the apex and the normal soft tissues laterally are under one cm. thick in individuals of normal weight. The dome of the right diaphragm is generally higher than that of the left due to the presence of the liver.

Even patients with dextrocardia have a slightly higher right diaphragm. The stomach bubble may be apparent under the left diaphragm and is one of the major identifying marks for the left diaphragm on the lateral x-ray.


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Copyright 2004, Yale University School of Medicine. All rights reserved.
December 18, 2004 (PL)
version b.003