Pulmonary cyst
Updates to Article Attributes
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was changed:
Pulmonary cysts are cystic spaces within the lung parenchyma that have a wall that measures between 1 and 4 mm. Lung cysts contain gas, not fluid.
The thickness of the wall is what distinguishes a cyst from a pulmonary cavity (that is defined as having a wall that is thicker than 4 mm). A bleb or bulla has a wall that is less than 1 mm.
Pathology
In contradistinction to all other organs, the term cyst as used in the lung, is a misnomer, as it refers to a contained focus of gas, not fluid.
Pulmonary cysts can be congenital or acquired. Multiple lung cysts in a child may be associated with an underlying process although this is rare, e.g. pleuropulmonary blastomas 1.
Differential diagnosis
- pulmonary cavity: wall thickness >2-4 mm 4-5
- bleb: wall thickness <1 mm at the lung surface
- bulla: wall thickness <1 mm
See also
-<p><strong>Pulmonary cysts </strong>are cystic spaces within the lung parenchyma that have a wall that measures between 1 and 4 mm. </p><p>The thickness of the wall is what distinguishes a cyst from a <a href="/articles/pulmonary-cavity">pulmonary cavity </a>(that is defined as having a wall that is thicker than 4 mm). A <a href="/articles/pulmonary-bleb">bleb</a> or <a href="/articles/pulmonary-bullae">bulla</a> has a wall that is less than 1 mm.</p><h4>Pathology</h4><p>Pulmonary cysts can be congenital or acquired. Multiple lung cysts in a child may be associated with an underlying process although this is rare, e.g. <a href="/articles/pleuropulmonary-blastomas">pleuropulmonary blastomas</a> <sup>1</sup>.</p><h4>Differential diagnosis</h4><ul>- +<p><strong>Pulmonary cysts </strong>are cystic spaces within the lung parenchyma that have a wall that measures between 1 and 4 mm. Lung cysts contain gas, not fluid.</p><p>The thickness of the wall is what distinguishes a cyst from a <a href="/articles/pulmonary-cavity">pulmonary cavity </a>(that is defined as having a wall that is thicker than 4 mm). A <a href="/articles/pulmonary-bleb">bleb</a> or <a href="/articles/pulmonary-bullae">bulla</a> has a wall that is less than 1 mm.</p><h4>Pathology</h4><p>In contradistinction to all other organs, the term cyst as used in the lung, is a misnomer, as it refers to a contained focus of gas, not fluid.</p><p>Pulmonary cysts can be congenital or acquired. Multiple lung cysts in a child may be associated with an underlying process although this is rare, e.g. <a href="/articles/pleuropulmonary-blastomas">pleuropulmonary blastomas</a> <sup>1</sup>.</p><h4>Differential diagnosis</h4><ul>
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