A right-sided pleural effusion often is present with left-sided heart failure. A bilateral hydrothorax, on the other hand, suggests bilateral heart failure or a noncardiac etiology of the effusion. Congestive heart failure is also known to be associated with a pseudotumor or "vanishing" tumor, representing an interlobar collection of pleural fluid (Fig. 12-17). As congestive heart failure improves, the "tumor" disappears.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.