Which of the following is the most common causative organism isolated from the ear discharge in atticoantral (unsafe) CSOM with cholesteatoma?
- A Mixed aerobic and anaerobic flora ✓
- B Staphylococcus aureus
- C Pseudomonas aeruginosa
- D Escherichia coli
Correct answer: A. Mixed aerobic and anaerobic flora
Explanation
Atticoantral CSOM with cholesteatoma characteristically yields mixed aerobic and anaerobic organisms on culture, reflecting the polymicrobial colonization of keratin debris and the anaerobic environment of the cholesteatoma sac. Pseudomonas aeruginosa is more typical of acute exacerbations or tubotympanic disease. Mixed flora with anaerobes is the hallmark of cholesteatoma-associated discharge.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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