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Deep sulcus sign
In radiology, the deep sulcus sign on an x-ray in an indication of a pneumothorax.  In a supine film (common in the ICU), it may be the only indication of a pneumothorax because air collects in the anterior costophrenic sulcus instead of the apex (of the lung) as with an upright film.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Deep_sulcus_sign". A list of authors is available in Wikipedia.|