Diseases of the Ear Practice Questions

Q: In a patient with unilateral hearing loss and tinnitus, which anatomical part of the ear is likely to be affected?

Inner ear. ***Inner ear*** - Conditions affecting the **inner ear**, such as **Ménière's disease** (which involves fluid imbalance in the labyrinth) or **vestibular schwannoma** (a tumor on the vestibulocochlear nerve), commonly present with both **unilateral hearing loss** and **tinnitus**. - The inner ear houses the **cochlea** (responsible for hearing) and the **vestibular system** (responsible for balance); damage here can directly lead to hearing deficits and the perception of sound when none is present. *External auditory canal* - Problems in the **external auditory canal**, such as **cerumen impaction** or **otitis externa**, might cause **unilateral hearing loss** but are less likely to cause tinnitus. - Hearing loss from external canal issues is typically **conductive** and rarely associated with tinnitus unless pressure changes or secondary inflammation affect other structures. *Middle ear* - **Middle ear** pathologies like **otitis media** or **otosclerosis** often lead to **conductive hearing loss** and can sometimes cause tinnitus due to altered sound transmission. - However, the combination of significant unilateral tinnitus and hearing loss is more characteristic of **sensorineural** pathology originating in the inner ear or auditory nerve. *Eustachian tube* - **Eustachian tube dysfunction** can lead to a sensation of **fullness**, **muffled hearing**, and sometimes **tinnitus** due to pressure changes. - While it can cause unilateral symptoms, the primary disturbance is often related to sound transmission rather than direct damage to the auditory sensory cells that generate tinnitus and significant sensorineural hearing loss.

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: Otosclerosis is inherited in which manner?

Autosomal dominant. ***Autosomal dominant*** - **Otospongiosis**, also known as **otosclerosis**, is most frequently inherited in an autosomal dominant pattern with **incomplete penetrance**. - This means that a single copy of the altered gene is sufficient to cause the condition, but not everyone who inherits the gene will develop symptoms. *Autosomal recessive* - **Autosomal recessive** inheritance requires two copies of the altered gene (one from each parent) for the condition to manifest. - This pattern is less common for otospongiosis and not considered the primary mode of inheritance. *X-linked dominant* - **X-linked dominant** inheritance affects both males and females, but typically males are more severely affected than females. - While otospongiosis shows some sex differences in presentation, its inheritance pattern is not primarily linked to the X chromosome in a dominant fashion. *X-linked recessive* - **X-linked recessive** inheritance primarily affects males since they only have one X chromosome, and females are typically carriers. - This pattern is not characteristic of otospongiosis, as evidence shows a significant transmission to both sexes from affected individuals.

Q: A 4-year-old child presents with difficulty hearing and frequent ear infections. An otoscopic examination reveals fluid in the middle ear without signs of acute infection. What is the most likely diagnosis?

Otitis media with effusion. ***Otitis media with effusion*** - The presence of **fluid in the middle ear** without signs of acute infection (e.g., fever, ear pain, bulging tympanic membrane) is characteristic of otitis media with effusion (OME). - This condition is a common cause of **hearing difficulty** and recurrent ear infections in children due to impaired Eustachian tube function. *Acute otitis media* - This diagnosis requires signs of **acute inflammation** and infection, such as ear pain, fever, and a **bulging, erythematous tympanic membrane**, which are absent in this case. - The fluid in acute otitis media is typically purulent and associated with more acute symptoms. *Otitis externa* - **Otitis externa** involves inflammation or infection of the **external ear canal**, often referred to as "swimmer's ear." - Symptoms typically include **ear pain**, itching, and discharge from the ear canal, and the tympanic membrane is usually normal. *Cholesteatoma* - A **cholesteatoma** is an abnormal, **non-cancerous skin growth** that develops in the middle ear, behind the eardrum. - While it can cause hearing loss and recurrent infections, it is characterized by a **retraction pocket** or **perforation** with **squamous debris**, which is not described here.

Q: A 60-year-old male presents with unilateral conductive hearing loss and a pearly white mass behind the tympanic membrane. What is the most likely diagnosis?

Cholesteatoma. ***Cholesteatoma*** - A **pearly white mass** behind an intact tympanic membrane, along with **unilateral conductive hearing loss**, is characteristic of a cholesteatoma. - Cholesteatomas are **destructive epithelial cysts** that can erode ossicles and bone, leading to progressive hearing loss and potential complications. *Otitis media with effusion* - This typically presents with a **dull, retracted tympanic membrane** and a **serous or mucoid effusion**, not a pearly white mass. - While it causes **conductive hearing loss**, it lacks the specific visual hallmark of a cholesteatoma. *Tympanosclerosis* - Characterized by **white plaques** on the tympanic membrane due to hyalinization and calcification, often after recurrent otitis media. - These plaques are usually **superficial** and do not present as a distinct mass *behind* the eardrum. *Foreign body* - A foreign body behind the tympanic membrane is **rare** and would typically be visible as an object, not a pearly white mass. - The history would likely include a clear event of foreign body insertion, which is not mentioned here.

Q: A 4-year-old child presents with a history of recurrent ear infections, poor school performance, and behavioral problems. Audiometry confirms bilateral conductive hearing loss. What is the most likely diagnosis?

Otitis media with effusion. ***Otitis media with effusion*** - **Recurrent ear infections** and **bilateral conductive hearing loss** in a child are classic signs of otitis media with effusion, often leading to **poor school performance** and **behavioral problems** due to impaired communication. - The effusion in the middle ear dampens sound transmission, causing **conductive hearing loss**. *Otosclerosis* - This condition is characterized by **abnormal bone growth** in the middle ear, leading to **progressive conductive hearing loss**, but it typically affects **adults**, not children. - It usually presents with a gradual onset of hearing loss and **tinnitus**, without a history of recurrent infections. *Congenital hearing loss* - While it causes **bilateral hearing loss**, it is present **from birth** and would likely be identified earlier during newborn screening or developmental milestones. - It is not typically associated with a history of **recurrent ear infections** or poor school performance as a presenting symptom in a 4-year-old in this manner. *Acute otitis media* - This involves an **acute bacterial or viral infection** of the middle ear, causing symptoms like **fever**, **ear pain**, and temporary hearing loss. - While recurrent episodes can lead to OME, **acute otitis media** itself describes a transient, painful infection, not the chronic effusion and associated developmental issues described.

Q: A 3-year-old child presents with severe otalgia, fever of 39.5°C for 2 days, and bulging tympanic membrane. What is the primary treatment for this acute otitis media?

Antibiotics. ***Antibiotics*** - **Antibiotics** are the primary treatment for **severe acute otitis media (AOM)** with high fever (≥39°C), severe otalgia, or bilateral disease in young children. - Common pathogens include *Streptococcus pneumoniae*, *Haemophilus influenzae*, and *Moraxella catarrhalis*. - First-line therapy is **high-dose amoxicillin** (80-90 mg/kg/day); **amoxicillin-clavulanate** if amoxicillin failure or recent antibiotic use. - Prompt treatment in severe cases prevents complications like **mastoiditis**, **meningitis**, and **hearing loss**. *Antiviral medication* - **Antiviral medications** are ineffective against AOM, which is primarily a **bacterial infection**. - While viral URTIs may precede AOM, the middle ear infection itself requires antibacterial therapy in severe cases. *Steroids* - **Steroids** reduce inflammation but do not address the underlying **bacterial infection**. - No role as primary treatment; may be considered as adjunct in specific cases with severe inflammation. *Observation only* - **Watchful waiting** (observation with analgesics) is appropriate for **non-severe AOM** in children >6 months with: - Unilateral AOM without severe symptoms - Mild otalgia and fever <39°C - Reliable follow-up available - However, in **severe AOM** with high fever and severe pain (as in this case), **immediate antibiotics** are indicated per AAP guidelines.

Q: A 35-year-old patient presents with recurrent otitis media. Tympanometry reveals a type B tympanogram. What is the best management option?

Myringotomy with tube placement. ***Myringotomy with tube placement*** - A type B tympanogram indicates greatly reduced or no **tympanic membrane (TM) mobility**, signifying **middle ear effusion** or **perforation**. Recurrent otitis media in this context suggests persistent middle ear fluid, for which **myringotomy with tube placement** is the definitive treatment to drain fluid and ventilate the middle ear. - This procedure prevents further fluid accumulation, reduces the frequency of acute otitis media episodes, and helps improve hearing. *Surgical consultation for ossicular chain* - While ossicular chain problems can cause hearing loss, they typically do not present with **recurrent otitis media** or a **type B tympanogram** indicating fluid. Ossicular issues are more likely to present with a **Type As tympanogram** (stiff ossicles) or a **Type Ad tympanogram** (disarticulation). - Investigating the ossicular chain would be indicated if other causes were ruled out or if conductive hearing loss persists after middle ear fluid resolution. *Topical antibiotics for perforation* - Topical antibiotics are used to treat active **infections in cases of tympanic membrane perforation** but do not address the underlying Eustachian tube dysfunction or persistent middle ear fluid that leads to recurrent otitis media. - A type B tympanogram could indicate a perforation if volume is large, but the primary issue in recurrent OM is typically fluid, not just the perforation itself. *Decongestants for Eustachian dysfunction* - **Decongestants** are sometimes used for **Eustachian tube dysfunction** but have limited efficacy in cases of recurrent otitis media with established middle ear effusion, especially in adults. - Their primary role is to reduce nasal congestion, which can indirectly help Eustachian tube function, but they don't directly resolve persistent fluid.

Q: A patient presented with the following picture of Tympanic Membrane. Most Probable diagnosis (marked with arrow):

Tubercular Otitis Media. ***Tubercular Otitis Media*** - The image exhibits **multiple perforations** in the tympanic membrane, along with **pale granulation tissue**, which are classic clinical features of **tubercular otitis media**. - Tubercular ear infections often present insidiously with **painless otorrhea** and **progressive hearing loss**, eventually leading to multiple perforations as the disease advances. *Syphilitic Otitis Media* - Syphilitic otitis media typically presents as **sensorineural hearing loss**, often sudden, and can be associated with **vestibular symptoms**. - It usually does **not cause multiple perforations** or extensive granulation tissue in the tympanic membrane. *Pseudomonas infection* - **Pseudomonas otitis externa** commonly causes severe pain, swelling, and purulent discharge, often seen in _elderly diabetic_ or _immunocompromised_ patients with potentially **malignant otitis externa**. - While *Pseudomonas* can cause chronic suppurative otitis media (CSOM) with a perforation, it doesn't typically lead to **multiple perforations** in the manner depicted. *Fungal Otitis Media* - Fungal otitis media (otomycosis) is characterized by the presence of **black, white, or yellow fungal debris** and hyphae within the external ear canal and on the tympanic membrane. - While it can cause inflammation and sometimes perforation, the image does not show characteristic **fungal elements** or the extensive **granulation tissue** typical of tubercular disease.

Question 1

In a patient with unilateral hearing loss and tinnitus, which anatomical part of the ear is likely to be affected?

Accepted Answer

Inner ear

Answer

External auditory canal

Answer

Middle ear

Answer

Eustachian tube

Question 2

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 3

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 4

Otosclerosis is inherited in which manner?

Accepted Answer

Autosomal dominant

Answer

Autosomal recessive

Answer

X-linked dominant

Answer

X-linked recessive

Question 5

A 4-year-old child presents with difficulty hearing and frequent ear infections. An otoscopic examination reveals fluid in the middle ear without signs of acute infection. What is the most likely diagnosis?

Accepted Answer

Otitis media with effusion

Answer

Acute otitis media

Answer

Otitis externa

Answer

Cholesteatoma

Question 6

A 60-year-old male presents with unilateral conductive hearing loss and a pearly white mass behind the tympanic membrane. What is the most likely diagnosis?

Accepted Answer

Cholesteatoma

Answer

Otitis media with effusion

Answer

Tympanosclerosis

Answer

Foreign body

Question 7

A 4-year-old child presents with a history of recurrent ear infections, poor school performance, and behavioral problems. Audiometry confirms bilateral conductive hearing loss. What is the most likely diagnosis?

Accepted Answer

Otitis media with effusion

Answer

Otosclerosis

Answer

Congenital hearing loss

Answer

Acute otitis media

Question 8

A 3-year-old child presents with severe otalgia, fever of 39.5°C for 2 days, and bulging tympanic membrane. What is the primary treatment for this acute otitis media?

Accepted Answer

Antibiotics

Answer

Antiviral medication

Answer

Steroids

Answer

Observation only

Question 9

A 35-year-old patient presents with recurrent otitis media. Tympanometry reveals a type B tympanogram. What is the best management option?

Accepted Answer

Myringotomy with tube placement

Answer

Surgical consultation for ossicular chain

Answer

Topical antibiotics for perforation

Answer

Decongestants for Eustachian dysfunction

Question 10

A patient presented with the following picture of Tympanic Membrane. Most Probable diagnosis (marked with arrow):

Accepted Answer

Tubercular Otitis Media

Answer

Syphilitic Otitis Media

Answer

Pseudomonas infection

Answer

Fungal Otitis Media

Diseases of the Ear — MCQs

Diseases of the Ear — MCQs

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