Infection (e.g., gas gangrene) can cause gas to be trapped in the subcutaneous tissues. Subcutaneous emphysema can be caused by medical procedures and medical conditions that cause the pressure in the alveoli of the lung to be higher than that in the tissues outside of them.
So here's a quick look at PFE's most important numbers right now (for April 14, 2017). PFE shares slipped 0.12% or $0.04 from the previous trading session. That took the Pfizer stock price to $33.88.
What is Pfizer's net worth? Pfizer's net worth is $67.425 billion. Pfizer began as a joint venture between two German-American relatives, Charles Pfizer and Charles Erhart. The two men, cousins, launched a lab and business in Williamsburg, Brooklyn in the mid-1840s, in which they produced santonin, an antiparasitic.