Take a quiz on the topic "Malignant otitis externa. " Before taking this quiz read up the topic from here.
An inflammatory condition
Malignancy involving external auditory canal
Cholesteatoma of external auditory canal
Otomycosis of extenal auditory canal
Infants
Teens
Elderly
Middle aged inviduals
Hypertensives
Diabetics
Patients with chronic renal failure
Patients with hepatic failure
Indicate the histological malignancy
Indicate the increased rate of complications
Indicate future malignant transformation
Since it is similar to basal cell carcinoma
Common in elderly
Common in diabetics
Inflammation involving external auditory canal
Malignant lesion involving the external auditory canal
Females outnumber males
Staph aureus
Beta hemolytic streptoccoi
Pneumococci
Pseudomonas
Diabetics
Hypertensives
Pts with blood cancer
Pts on anticancer drugs
Pts with HIV infections
Pts with hepatitis
They have impaired phagocytosis
They secrete wax which is less in lysosome content
Impaired intracellular digestion of bacteria
Its ability to secrete exotoxin
Secrete enzyme lecithinase
Secretes hydrochloric acid
Secretes proteases
Secretes lipase
Organism is clothed by mucin
Meltzer
Chandler
Kerry
Levenson
Granulation tissue at the bony cartilaginous junction
Perforation of ear drum
External auditory canal skin soggy and oedematous
Attic perforation
Inferiorly through stylomastoid foramen involving facial nerve
Anteriorly to parotid
Posteriorly to submandibular gland
Posteriorly to mastoid and sigmoid sinus
Medially to sphenoid
Spread via vascular channels
To identify intracranial extension
To identify bony erosion
It is of no use
To identify involvement of parotid gland
CT scan
MRI
Conventional radiographs
Serial Ga 67 scans
In studying bone involvement
In studying soft tissue involvment
In studying the vascularity of the lesion
In studying adequacy of treatment
Refractory otitis externa
Refractory otitis media
Severe nocturnal otalgia
Purulent otorrhoea
Granulation tissue in external canal
Growth of pseudomonas from external canal
Growth of streptococci from external canal
Presence of diabetes
Soft tissue otitis
Positive Gallium 67 scan and negative TC 99 scan
Positive Gallium 67 and positive TC 99 scans
Skull base osteomyelitis
Skull base osteomyelitis
Positive Ga 67 and positive TC 99 scans
Positive Gallium 67 scan and negative TC 99 scan
Positive Gallium 67 scan and negative TC 99 scan
Extensive skull base osteomyelitis
Positive Gallium 67 scan and negative TC 99 scan