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.
- 1.What are the clinical features of malignant otitis externa?
- 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
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