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MSSA staph infection
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MSSA staph infection

I have been diagnosed with bronchiectasis which is localized in my left lower lung. Recently, I've had a bronchoscopy and I was told that I had MSSA. There is very little about MSSA on the web. I did read a lot of information about MRSA. Can anyone tell me more about MSSA? Is it curable? Does MSSA turn into MRSA over time?  
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You are fortunate in having Methicillin sensitive staph aureus (MSSA) rather than Methicillin resistant staph aureus (MRSA).  The former should be sensitive and, perhaps eradicated, compared with the MRSA.  However, Staph aureus is seldom an infectious agent, seen with bronchiectasis.  The bacteria most commonly seen are Pseudomonas, Moraxella, Strep Pneumonia, and Hemophilus.  The MSSA may be a contaminant or a commensal, a non-invasive bacterium, which is living in the body but not invasive or causing disease.

You should determine if the specialist who did the bronchoscopy arranged for cultures for Mycobacterium avium complex (MAC) a nontuberculous mycobacterium (NTM), the group that includes the age old scurge, Mycobacterium tuberculosis.  MAC is increasingly seen with bronchiectasis and may actually be a cause of bronchiectasis.  It requires different antibiotic therapy than does the treatment of tuberculosis.

You should also ask the pulmonary specialist, what is the most likely cause of your bronchiectasis.  Possible causes would include cystic fibrosis, immune disorders, inherited bronchial structural disorders and a variety of inflammatory disorders.

Depending on the cause, surgical resection of localized bronchiectasis may be an option.
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