DISEASES OF TYMPANIC MEMBRANE

Question 1

Normal Tympanic Membrane

Answer 1

shiny,pearly grey in color with with a concavity on its lateral surface more marked at the tip of malleus,the umbo
a bright cone of light underneathe

Question 2

retracted tympanic membrane

Answer 2

it appears dull and lustreless. Cone of light either absent or interrupted, handle of malleus appears foreshortened,lateral process of malleus prominent, ant and post malleal folds become sickle shaped

Question 3

myringitis bullosa

Answer 3

painful condition characterized by formation of hemorrhage blebs on the tympanic membrane and deep meatus. It is probably caused by a virus or M. pneumoniae

Question 4

Herpes Zoster Oticus

Answer 4

a viral infection involving a geniculate ganglion of facial nerve . it is characterized by appearance of vesicles of on the tympanic membrane,deep meatus,concha and retroauricular sulcus. may involve 7 and 8 CN

Question 5

atrophic tympanic membrane

Answer 5

middle fibrous layer gets absorbed leving a thin drumhead which easily gets collapsed w eustachian tube insufficiency

Question 6

Tympanosclerosis

Answer 6

Hyalinization and calcification in the fibrous layer of the tympanic membrane
Chalky white plaque
Asymptomatic
Serous otitis media