What is the role of radiography in the diagnosis of cocaine toxicity?

Updated: Sep 01, 2018
  • Author: Lynn Barkley Burnett, MD, EdD, LLB(c); Chief Editor: Sage W Wiener, MD  more...
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Answer

Chest radiographs, which should be obtained in patients with chest pain, hypoxia, or moderate to severe cocaine toxicity, may reveal the following:

  • Diffuse granulomatous changes: In cases of chronic parenteral cocaine use, due to the injection of inert insoluble ingredients of oral preparations or insolubles used to cut cocaine (eg, talc)

  • Septic pulmonary emboli: Appear round or wedge shaped; they may clear rapidly or cavitate

  • Aspiration pneumonitis and noncardiogenic pulmonary edema

  • Pulmonary abscess: May become evident after aspiration pneumonitis or after an intravenous injection of bacteria or toxic organic or inorganic materials

  • Aneurysm or pseudoaneurysm: May be noted with mainlining (ie, directly injecting into a central artery or vein); this finding is an indication for further imaging studies

In addition, radiography may be useful for evaluating cellulitis, an abscess, or a nonhealing wound in an intravenous drug user; it may  reveal a foreign body or subcutaneous emphysema produced by gas-forming organisms in an anaerobic infection. Ultrasonography may identify a foreign body or abscess.

Skeletal images can reveal osteomyelitis or fractures. However, because osteomyelitis may not be demonstrable on plain images for 1-2 weeks, other imaging studies should be performed if such a diagnosis is considered.


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