CME Quiz On Malignant Otitis Externa

20 Questions | Total Attempts: 700

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CME  Quiz On Malignant Otitis Externa

Take a quiz on the topic "Malignant otitis externa. " Before taking this quiz read up the topic from here.


Questions and Answers
  • 1. 
  • 2. 
    Malignant otitis externa is
    • A. 

      An inflammatory condition

    • B. 

      Malignancy involving external auditory canal

    • C. 

      Cholesteatoma of external auditory canal

    • D. 

      Otomycosis of extenal auditory canal

  • 3. 
    Majority of patients affected with malginant otitis externa are
    • A. 

      Infants

    • B. 

      Teens

    • C. 

      Elderly

    • D. 

      Middle aged inviduals

  • 4. 
    Malignant otitis externa is commonly seen in
    • A. 

      Hypertensives

    • B. 

      Diabetics

    • C. 

      Patients with chronic renal failure

    • D. 

      Patients with hepatic failure

  • 5. 
    The term malignancy is used in the terminology to 
    • A. 

      Indicate the histological malignancy

    • B. 

      Indicate the increased rate of complications

    • C. 

      Indicate future malignant transformation

    • D. 

      Since it is similar to basal cell carcinoma

  • 6. 
    Features of malignant otitis externa are
    • A. 

      Common in elderly

    • B. 

      Common in diabetics

    • C. 

      Inflammation involving external auditory canal

    • D. 

      Malignant lesion involving the external auditory canal

    • E. 

      Females outnumber males

  • 7. 
    Causative organism of malignant otitis externa is
    • A. 

      Staph aureus

    • B. 

      Beta hemolytic streptoccoi

    • C. 

      Pneumococci

    • D. 

      Pseudomonas

  • 8. 
    Category of patients affected with malignant otitis externa are
    • A. 

      Diabetics

    • B. 

      Hypertensives

    • C. 

      Pts with blood cancer

    • D. 

      Pts on anticancer drugs

    • E. 

      Pts with HIV infections

    • F. 

      Pts with hepatitis

  • 9. 
    Diabetics are predisposed to malignant otitis externa because
    • A. 

      They have impaired phagocytosis

    • B. 

      They secrete wax which is less in lysosome content

    • C. 

      Impaired intracellular digestion of bacteria

  • 10. 
    Pathogenicity of pseudomonas is due to
    • A. 

      Its ability to secrete exotoxin

    • B. 

      Secrete enzyme lecithinase

    • C. 

      Secretes hydrochloric acid

    • D. 

      Secretes proteases

    • E. 

      Secretes lipase

    • F. 

      Organism is clothed by mucin

  • 11. 
    Pseudomonas otitis externa was first described by
    • A. 

      Meltzer

    • B. 

      Chandler

    • C. 

      Kerry

    • D. 

      Levenson

  • 12. 
    Otoscopic findings of malignant otitis externa include:
    • A. 

      Granulation tissue at the bony cartilaginous junction

    • B. 

      Perforation of ear drum

    • C. 

      External auditory canal skin soggy and oedematous

    • D. 

      Attic perforation

  • 13. 
    Spread of infection from malignant otitis externa occurs
    • A. 

      Inferiorly through stylomastoid foramen involving facial nerve

    • B. 

      Anteriorly to parotid

    • C. 

      Posteriorly to submandibular gland

    • D. 

      Posteriorly to mastoid and sigmoid sinus

    • E. 

      Medially to sphenoid

    • F. 

      Spread via vascular channels

  • 14. 
    Role of conventional radiology in these patients is
    • A. 

      To identify intracranial extension

    • B. 

      To identify bony erosion

    • C. 

      It is of no use

    • D. 

      To identify involvement of parotid gland

  • 15. 
    Efficacy of treatment can be judged by performing
    • A. 

      CT scan

    • B. 

      MRI

    • C. 

      Conventional radiographs

    • D. 

      Serial Ga 67 scans

  • 16. 
    MRI scanning in these patients are useful
    • A. 

      In studying bone involvement

    • B. 

      In studying soft tissue involvment

    • C. 

      In studying the vascularity of the lesion

    • D. 

      In studying adequacy of treatment

  • 17. 
    Levenson's criteria for diagnosis of malignant otitis externa include
    • A. 

      Refractory otitis externa

    • B. 

      Refractory otitis media

    • C. 

      Severe nocturnal otalgia

    • D. 

      Purulent otorrhoea

    • E. 

      Granulation tissue in external canal

    • F. 

      Growth of pseudomonas from external canal

    • G. 

      Growth of streptococci from external canal

    • H. 

      Presence of diabetes

  • 18. 
    Features of Stage I of malignant otitis externa include:
    • A. 

      Soft tissue otitis

    • B. 

      Positive Gallium 67 scan and negative TC 99 scan

    • C. 

      Positive Gallium 67 and positive TC 99 scans

    • D. 

      Skull base osteomyelitis

  • 19. 
    Features of Stage II malignant otitis externa
    • A. 

      Skull base osteomyelitis

    • B. 

      Positive Ga 67 and positive TC 99 scans

    • C. 

      Positive Gallium 67 scan and negative TC 99 scan

  • 20. 
    Difference between stage ii and stage iii malignant otitis externa is
    • A. 

      Positive Gallium 67 scan and negative TC 99 scan

    • B. 

      Extensive skull base osteomyelitis

    • C. 

      Positive Gallium 67 scan and negative TC 99 scan