Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ENT > External Ear Disorders > Flashcards

External Ear Disorders Flashcards

1
Q

What is the most common malignant tumor of the skin?

A

Basal Cell Carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Sun exposure/exposed sites

Presents as a painless ulcer/nodule

Rolled, pearly border

A

Basal Cell Carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the most common neoplasm of the ear canal?

A

Squamous Cell Carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Presents as a hard, non-tender, red, indurated papule, nodule, or
plaque

Prolonged UV light exposure/exposed sites

Often arises from actinic keratosis

Incidence increases with age

A

Squamous Cell Carcinoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

In cases of squamous cell carcinoma, the cure rate is what percentage with lesions of the auricle?

A

90%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Usually asymptomatic

Common around the ear

Well defined, non-tender, soft, mobile

Cystic mass that is slow growing

Spontaneous drainage is not uncommon

A

Epidermal Inclusion Cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Inflammation of auricular cartilage

Tender, red, tense auricle

Spares the lobe

Secondary to cellulitis, frostbite, trauma

+/- discharge or crusting

A

Perichondritis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are some complications of perichondritis?

A

Relapsing polychondritis

Cartilage destruction

deformity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are some differential diagnoses to consider when evaluating for a possible epidermal inclusion cyst of the ear?

A

Furuncle

Lipoma

Pyogenic granuloma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Painful swelling following blunt trauma

Common in boxers and wrestlers

Present as a tender, tense, fluctuant collection of
blood - The overlying skin can be erythematous or ecchymotic

A

Auricular Hematoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the treatment for an auricular hematoma?

A

I&D ASAP after injury

Splint

Prophylactic antibiotics

Prevent reaccumulation of blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are some complications of an auricular hematoma?

A

Infection

Recurrence of hematoma

Cauliflower ear (Due to fibrocartilage overgrowth)

Septic or aseptic necrosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

In the cases of an auricular hematoma, what is the time frame to treat to avoid a cauliflower deformity?

A

48-72 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the function of cerumen?

A

Cerumen cleans, protects, and lubricates the EAC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Ear wax produced in what part of the EAC? distal 1/3

A

distal 1/3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What must you rule out before performing otomicroscopic debridement?

A

MUST rule out perforation first!!

15
Q

What are some differential diagnoses to consider when evaluating for cerumen impaction?

A

Foreign body
Tumor
Furuncle
Blood clot from TM perforation

16
Q

What are some causes of a cerumen impaction?

A

cerumen over-production
tortuous canal
Q-tip cleaning

17
Q

In an external ear canal foreign body, what are some common presenting symptoms?

A

pain, discharge, aural fullness, hearing loss, itching, tinnitus

18
Q

AKA Swimmers Ear

Infection of the EAC caused by a bacterial, viral, or fungal etiology

Seen most often in the summer months secondary to retained moisture in EAC

A

Otitis Externa

19
Q

In otitis externa, what are some common presenting symptoms?

A

Otalgia out of proportion to PE findings
Pain with traction to tragus or helix
Pruritis
Purulent or watery discharge
Erythematous/edematous EAC
+/- conductive loss
Rarely fever

20
Q

What are the two most common organisms in otitis externa?

A

Staph and Pseudomonas

21
Q

In a case of otitis externa, if you see a discharge colored green, you should suspect which organism?

A

Pseudomonas

22
Q

In a case of otitis externa, if you see a discharge colored yellow, you should suspect which organism?

A

S. Aureus

23
Q

In a case of otitis externa, if you see a discharge that is “cheesy”, you should suspect which organism?

A

Candida

24
Q

In a case of otitis externa, if you see a discharge that is “fluffy”, you should suspect which organism?

A

Aspergillus

25
Q

What are some complications of otitis externa?

A

Myringitis
Conductive hearing loss
Cellulitis
Osteomyelitis of skull base

26
Q

What is the drug of choice for otitis externa?

A

Ciprodex

27
Q

Persistent foul otorrhea, canal granulation, deep otalgia and
progressive palsies (VI, VII, IX, X, XI, or XII)

Begins in the floor of ear canal, may extend into middle fossa floor,
clivus and contralateral skull base

Typical agent: P. aeruginosa

Diabetic and the immunocompromised

A

Malignant Otitis Media

28
Q

What location does malignant otitis media occur?

A

Occurs in the cartilaginous-boney junction

29
Q

What is the most common organism in malignant otitis media?

A

P. aeruginosa

30
Q

List some possible pathogens responsible for viral otitis externa

A

varicella
measles
herpes virus

31
Q

Otologic complication of varicella zoster virus reactivation

Clinical presentation typically includes ipsilateral facial paralysis, ear pain, and vesicles in the auditory canal and auricle

A

Herpes zoster oticus (Ramsay Hunt syndrome)

32
Q

What is another name for Ramsay Hunt syndrome?

A

Herpes zoster oticus

33
Q

What is the most common external ear canal neoplasia?

A

Squamous Cell Carcinoma

34
Q

Congenital anomaly (Narrow or closed EAC)

Often malformation of pinna and middle ear structures as well

A

Atresia

35
Q

Present as fistulas, cysts, and sinuses

Prone to infection

A

First Branchial Cleft Anomalies

ENT (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions