Diseases of the Ear Practice Questions

Q: In the context of acute otitis media, Weber's test will be:

Lateralized to the affected ear. ***Lateralized to the affected ear*** - **Weber's test** is used to detect **unilateral conductive or sensorineural hearing loss**. In acute otitis media, there is often fluid in the middle ear space, leading to **conductive hearing loss**. - With **conductive hearing loss**, bone conduction is perceived as louder in the affected ear because the masking effect of ambient noise transmitted via air conduction is reduced, causing the sound to be **lateralized to the affected (poorer) ear**. - This occurs because the affected ear with middle ear fluid has reduced air conduction, making the bone-conducted sound relatively more prominent in that ear. *Not lateralized* - This would imply either **no hearing loss** or **symmetrical hearing loss** (either conductive or sensorineural), which is not typical for unilateral acute otitis media. - A lack of lateralization suggests the sound is perceived equally in both ears, which is not the expected finding when one ear has significant middle ear pathology. *Lateralized to the better ear* - Lateralization to the **better ear** typically indicates **sensorineural hearing loss** in the poorer ear. - Acute otitis media primarily causes **conductive hearing loss** due to fluid accumulation in the middle ear, not sensorineural pathology. *Inconclusive* - Weber's test is generally a **reliable and conclusive test** for differentiating between unilateral conductive and sensorineural hearing loss. - If performed correctly, it should yield a clear lateralization or lack thereof, providing valuable diagnostic information in acute otitis media.

Q: A child with a history of recurrent otitis media presents with fever, ear pain, and a protruding auricle. What is the most likely diagnosis?

Acute mastoiditis. ***Acute mastoiditis*** * The child's history of **recurrent otitis media**, coupled with **fever**, **ear pain**, and a **protruding auricle**, is highly suggestive of acute mastoiditis. * **Mastoiditis** is an infection of the **mastoid air cells** that typically arises as a complication of **untreated or recurrent acute otitis media**; the protruding auricle is due to inflammation and edema pushing the pinna outward. *Otitis externa* * **Otitis externa** primarily affects the **ear canal**, causing pain, discharge, and itching, but typically does not involve a **protruding auricle**. * It is less likely to present with significant **fever** unless there is extensive cellulitis or a severe underlying condition. *Cholesteatoma* * A **cholesteatoma** is an abnormal, non-cancerous skin growth in the middle ear, which can cause **hearing loss** and **chronic ear discharge**, but it does not typically cause acute fever or a protruding auricle as an initial presentation. * It is usually a chronic condition and its acute complications, such as an **abscess**, would be needed to explain the protruding auricle and fever. *Otitis media with effusion* * **Otitis media with effusion** involves fluid in the middle ear without signs of acute infection, leading to **hearing loss** but not usually associated with pain, fever, or a **protruding auricle**. * This condition is typically **painless** and afebrile, differentiating it from the child's acute symptoms.

Q: A 55-year-old female presents with progressive hearing loss. Audiometry reveals conductive hearing loss, and a CT scan shows ossification of the stapes. What is the most likely diagnosis?

Otosclerosis. ***Otosclerosis*** - **Otosclerosis** is characterized by abnormal bone remodeling in the **otic capsule**, leading to **stapes fixation** and conductive hearing loss. - The CT scan finding of **ossification of the stapes** is pathognomonic for otosclerosis. *Chronic suppurative otitis media* - This condition involves **persistent infection and inflammation** of the middle ear, often with a **perforated tympanic membrane** and discharge. - While it can cause conductive hearing loss due to ossicular destruction or tympanic membrane perforation, it does not typically present with isolated **stapes ossification**. *Serous otitis media* - **Serous otitis media** is characterized by the presence of **fluid in the middle ear space** without signs of acute infection, commonly causing conductive hearing loss. - It does not involve **ossification of the stapes** or other bone remodeling processes like otosclerosis. *Acoustic neuroma* - An **acoustic neuroma** is a benign tumor of the **vestibulocochlear nerve** (cranial nerve VIII), typically causing **sensorineural hearing loss**, tinnitus, and balance issues. - It does not cause conductive hearing loss or ossification of the stapes; rather, it originates from the nerve itself.

Q: Which of the following is the treatment of choice for a patient with recurrent cholesteatoma?

Surgical excision. ***Surgical excision*** - **Surgical excision** is the definitive treatment for **cholesteatoma**, especially in cases of recurrence, to completely remove the abnormal growth and prevent complications. - The goal is to eradicate the disease, preserve or improve hearing, and prevent further bone erosion or intracranial spread. *Antibiotics* - **Antibiotics** are typically used to treat associated **bacterial infections** or **otitis media**, but they do not resolve the underlying cholesteatoma. - **Cholesteatoma** is an epithelial growth, not primarily an infection, so antibiotics alone are insufficient. *Corticosteroids* - **Corticosteroids** may be used to reduce **inflammation** or swelling associated with cholesteatoma but do not remove the epithelial mass itself. - They are adjunctive therapies and not the primary treatment for the surgical nature of cholesteatoma. *Radiotherapy* - **Radiotherapy** is generally not indicated for **cholesteatoma** as it is a benign, non-malignant condition that requires physical removal. - The risks associated with radiation exposure outweigh any potential benefits in treating this specific condition.

Q: Which of the following statements is true about otosclerosis?

More common in females than in males.. ***More common in females than in males.*** - **Otosclerosis** is observed more frequently in females, with a female-to-male ratio of approximately **2:1**, and it often worsens during **pregnancy**. - This higher prevalence in women suggests a potential influence of **hormonal factors** on disease progression. *More common in African descendants than in Caucasians.* - This is **incorrect**. Otosclerosis shows a clear **racial predilection**, being significantly more common in **Caucasian populations** compared to African, Asian, or Native American populations. - The prevalence is highest in White populations (especially of European descent) and lowest in African and Asian populations. *Approximately 60-70% have a family history.* - While otosclerosis does have a **genetic component** and a significant percentage of patients have a positive family history, the reported figures are closer to **50%**, making 60-70% an overestimation. - Familial otosclerosis suggests an **autosomal dominant inheritance pattern** with incomplete penetrance. *Primarily affects the inner ear structures.* - Otosclerosis is primarily a disease of the **middle ear**, specifically involving the ossicles and the **stapes footplate**, leading to progressive **conductive hearing loss**. - Although it can rarely extend to the inner ear (cochlear otosclerosis), the primary pathology is in the **bony labyrinth** affecting the stapes at the oval window.

Q: A child presents with a foreign body in the ear. What is the initial step in management?

Otoscopic examination. ***Otoscopic examination*** - An **otoscopic examination** is the critical initial step to **visualize the foreign body**, assess its size, type, location, and rule out tympanic membrane perforation or other complications. - This assessment guides the choice of the safest and most effective **removal technique**. *Antibiotic therapy* - **Antibiotic therapy** is not indicated as an initial step unless there are signs of **infection** secondary to the foreign body presence. - Administering antibiotics prematurely can mask symptoms or promote **antibiotic resistance**. *CT scan* - A **CT scan** is generally reserved for complex cases where the foreign body is not visible, deeply impacted, or suspected to be within the middle ear or mastoid, and is **not an initial diagnostic tool**. - It involves radiation exposure and is **unnecessary** for most visible foreign bodies. *Observation* - **Observation** is inappropriate as a foreign body in the ear can lead to complications such as **pain**, **infection**, **hearing loss**, or damage to the ear canal and **tympanic membrane**. - Prompt removal is usually necessary to prevent these adverse outcomes.

Q: A 25-year-old swimmer presents with ear pain and discharge. Otoscopy reveals inflammation of the external ear canal. What is the most likely diagnosis?

Otitis externa. ***Otitis externa*** - The patient's presentation with **ear pain** and discharge, especially as a **swimmer**, along with otoscopy findings of **inflammation of the external ear canal**, is highly characteristic of otitis externa, also known as **swimmer's ear**. - This condition is an inflammation or infection of the **external auditory canal**, often precipitated by moisture and trauma. *Acute otitis media* - Acute otitis media primarily involves infection of the **middle ear**, not the external ear canal, and is typically characterized by a **red, bulging tympanic membrane** (eardrum) with potential effusion behind it. - While it presents with ear pain, the otoscopy findings here specifically describe **external ear canal inflammation**, ruling out typical acute otitis media. *Chronic otitis media* - This condition is characterized by **persistent inflammation or infection of the middle ear and mastoid cavity**, often resulting in a **tympanic membrane perforation** and chronic drainage (otorrhea) from the middle ear. - The findings of primary **external ear canal inflammation** do not align with the hallmark features of chronic otitis media. *Eustachian tube dysfunction* - Eustachian tube dysfunction involves impaired function of the **Eustachian tube**, leading to a feeling of **ear fullness**, pressure, or mild hearing loss due to negative pressure in the middle ear. - It does not typically present with significant **ear pain and discharge** or overt inflammation of the external ear canal.

Q: A patient presents with a history of recurrent otitis media and a tympanic membrane perforation. What is the most common complication?

Hearing loss. ***Hearing loss*** - Chronic otitis media with tympanic membrane perforation almost invariably leads to **conductive hearing loss** due to ossicular damage, inflammation, or fluid in the middle ear. - This is the most common and often an early complication observed in patients with recurrent ear infections and perforations. *Mastoiditis* - While a serious complication, **mastoiditis** is less common than hearing loss and involves infection spreading to the mastoid air cells, often presenting with postauricular pain and swelling. - It typically occurs when acute otitis media is left untreated or inadequately treated, leading to bone erosion. *Facial nerve palsy* - **Facial nerve palsy** is a rare and severe complication, typically associated with extensive local inflammation or cholesteatoma eroding towards the facial nerve canal. - Its occurrence is much less frequent compared to the high incidence of hearing impairment with recurrent otitis media. *Labyrinthitis* - **Labyrinthitis**, an inflammation of the inner ear, is also a less common complication, often manifesting as vertigo, nystagmus, and sensorineural hearing loss. - It usually occurs due to direct extension of infection from the middle ear to the inner ear, or via toxins, and is not the most frequent consequence.

Q: A 35-year-old male presents with pulsatile tinnitus and a reddish mass behind the tympanic membrane. What is the most likely diagnosis?

Glomus tumor. ***Glomus tumor*** - A **glomus tumor** (paraganglioma) typically presents with **pulsatile tinnitus** due to its vascular nature and appears as a **reddish mass behind the tympanic membrane**. - Its presence can lead to **conductive hearing loss** and, in some cases, cranial nerve palsies due to local invasion. *Cholesteatoma* - A **cholesteatoma** is a benign growth of **squamous epithelium** that causes a white, pearly mass, not a reddish one, and often leads to foul-smelling discharge and bone erosion. - While it can cause hearing loss and tinnitus, the tinnitus is usually not pulsatile, and the visual appearance behind the tympanic membrane is distinct. *Otosclerosis* - **Otosclerosis** is characterized by abnormal bone remodeling in the middle ear, leading to **progressive conductive hearing loss**, typically without a visible mass behind the tympanic membrane. - It does not cause pulsatile tinnitus or a reddish mass; rather, the tympanic membrane often appears normal or may show a "Schwartze sign" (reddish hue over the promontory) in active disease, which is different from a distinct mass. *Acoustic neuroma* - An **acoustic neuroma** (vestibular schwannoma) is a benign tumor of the **vestibulocochlear nerve** that typically causes **unilateral sensorineural hearing loss**, tinnitus (often non-pulsatile), and balance issues. - It does not present as a visible mass behind the tympanic membrane, as it is located internally within the cerebellopontine angle.

Question 1

In the context of acute otitis media, Weber's test will be:

Accepted Answer

Lateralized to the affected ear

Answer

Not lateralized

Answer

Lateralized to the better ear

Answer

Inconclusive

Question 2

A 2-year-old male with recurrent otitis media presents for the fourth episode this year. There is no hearing loss. On physical examination, the tympanic membrane is erythematous and bulging, with no perforation. The middle ear effusion persists after antibiotic treatment. Analyze the situation and recommend the next step.

Accepted Answer

Tympanostomy tube insertion

Answer

Watchful waiting for 3 months

Answer

Corticosteroid ear drops

Answer

Switch to broad-spectrum antibiotics

Question 3

A child with a history of recurrent otitis media presents with fever, ear pain, and a protruding auricle. What is the most likely diagnosis?

Accepted Answer

Acute mastoiditis

Answer

Otitis externa

Answer

Cholesteatoma

Answer

Otitis media with effusion

Question 4

A 55-year-old female presents with progressive hearing loss. Audiometry reveals conductive hearing loss, and a CT scan shows ossification of the stapes. What is the most likely diagnosis?

Accepted Answer

Otosclerosis

Answer

Chronic suppurative otitis media

Answer

Serous otitis media

Answer

Acoustic neuroma

Question 5

Which of the following is the treatment of choice for a patient with recurrent cholesteatoma?

Accepted Answer

Surgical excision

Answer

Antibiotics

Answer

Corticosteroids

Answer

Radiotherapy

Question 6

Which of the following statements is true about otosclerosis?

Accepted Answer

More common in females than in males.

Answer

Primarily affects the inner ear structures.

Answer

Approximately 60-70% have a family history.

Answer

More common in African descendants than in Caucasians.

Question 7

A child presents with a foreign body in the ear. What is the initial step in management?

Accepted Answer

Otoscopic examination

Answer

Antibiotic therapy

Answer

CT scan

Answer

Observation

Question 8

A 25-year-old swimmer presents with ear pain and discharge. Otoscopy reveals inflammation of the external ear canal. What is the most likely diagnosis?

Accepted Answer

Otitis externa

Answer

Acute otitis media

Answer

Chronic otitis media

Answer

Eustachian tube dysfunction

Question 9

A patient presents with a history of recurrent otitis media and a tympanic membrane perforation. What is the most common complication?

Accepted Answer

Hearing loss

Answer

Mastoiditis

Answer

Facial nerve palsy

Answer

Labyrinthitis

Question 10

A 35-year-old male presents with pulsatile tinnitus and a reddish mass behind the tympanic membrane. What is the most likely diagnosis?

Accepted Answer

Glomus tumor

Answer

Cholesteatoma

Answer

Otosclerosis

Answer

Acoustic neuroma

Diseases of the Ear — MCQs

Diseases of the Ear — MCQs

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