Diseases of the Ear Practice Questions

Q: What is the primary treatment for attico-antral disease?

Modified radical mastoidectomy. ***Modified radical mastoidectomy*** - This procedure is the primary treatment for **attico-antral disease**, which often involves **cholesteatoma**. - It involves removing the **posterior canal wall**, mastoid air cells, diseased ossicles, and marsupializing the epitympanum, antrum, and mastoid cavity into a common cavity to eradicate the disease and create a safe ear. *Antibiotics* - While antibiotics can treat acute infections associated with **otitis media**, they do not address the underlying **cholesteatoma** or chronic inflammatory changes seen in attico-antral disease. - **Cholesteatoma** is a structural problem requiring surgical removal, not medical management. *Grommet insertion* - **Grommet insertion** (tympanostomy tube) is primarily used to treat **secretory otitis media** or recurrent acute otitis media by ventilating the middle ear. - It does not address the bone erosion or destructive nature of **attico-antral disease** that involves the attic and antrum. *Syringing* - **Ear syringing** is used to remove **earwax (cerumen)** impaction from the external auditory canal. - It is completely unrelated to the management of **middle ear pathologies** like attico-antral disease.

Q: Which cranial nerve is most commonly damaged in Chronic Suppurative Otitis Media (CSOM)?

VII. ***VII*** - The **facial nerve (VII)** passes directly through the middle ear via the **facial canal**, making it highly vulnerable to inflammation, granulation tissue, and cholesteatoma associated with CSOM. - Damage to the facial nerve can result in **facial paralysis**, a serious complication of inadequately treated CSOM. *III* - The **oculomotor nerve (III)** supplies most of the extrinsic eye muscles and is located in the midbrain, far from the middle ear cavity. - Damage to cranial nerve III is generally associated with **intracranial pathologies** or orbital issues, not otitis media. *IV* - The **trochlear nerve (IV)** innervates the superior oblique muscle of the eye and originates in the midbrain, having no direct anatomical relationship with the middle ear. - Injury to cranial nerve IV typically results in **diplopia** and is uncommon in scenarios involving ear infections. *VI* - The **abducens nerve (VI)** supplies the lateral rectus muscle of the eye and is also located intracranially, distant from the middle ear. - While intracranial complications of CSOM can rarely affect adjacent structures, direct involvement of cranial nerve VI due to middle ear infection is less common than facial nerve involvement.

Q: A 5-year-old child presents with reduced hearing for the past 2-3 months. Based on the otoscopy findings shown, what is the most likely diagnosis?

Otitis media with effusion. ***Otitis media with effusion*** - The image clearly shows the presence of **bubbles behind the tympanic membrane**, indicating fluid accumulation in the middle ear. - This fluid leads to **reduced hearing**, as reported in the 5-year-old child, consistent with otitis media with effusion (OME), also known as "glue ear." *Myringitis* - Myringitis typically presents with **inflammation of the tympanic membrane**, often with vesicles or bullae on the drum, which are not visible here. - While it can cause pain, it does not typically show the characteristic bubbles signifying middle ear effusion. *Acute ear infection* - An **acute otitis media** would show a **bulging, erythematous (red), and opaque tympanic membrane** due to inflammation and pus, which is not consistent with the image. - Systemic symptoms like fever and severe ear pain would also be expected with an acute infection. *Air in the middle ear* - The presence of **air in the middle ear is normal** and indicates a healthy, functioning Eustachian tube. - The visible bubbles in the image are consistent with **fluid and air-fluid levels**, not just air, and indicate a pathological condition affecting hearing.

Q: Which diagnosis is most consistent with this otoscopic image?

Partial cerumen accumulation in the external auditory canal. The image shows localized yellow-brown, waxlike debris along one side of the external auditory canal, with much of the tympanic membrane remaining visible. This is most consistent with partial cerumen accumulation. Keratosis obturans typically produces a dense keratin plug that diffusely occludes the canal and may cause smooth circumferential widening; those features are not shown. External auditory canal cholesteatoma requires evidence of focal canal-wall erosion, often with sequestrated bone, while acquired middle-ear cholesteatoma is suggested by a tympanic membrane retraction pocket or perforation containing keratin. Neither is demonstrated here.

Q: Which of the following is NOT a characteristic of Tubercular Otitis Media?

Painful otorrhea. ***Painful otorrhea*** - **Tubercular otitis media** is typically characterized by **painless otorrhea** (ear discharge). - The absence of significant pain, despite chronic infection, is a hallmark feature, distinguishing it from more common bacterial otitis media. *Multiple perforations* - Multiple or **kissing perforations** of the tympanic membrane are characteristic findings in tubercular otitis media due to the extensive tissue destruction. - These perforations are often progressive and can coalesce. *Pale granulations* - The middle ear mucosa often shows the presence of **pale granulations** and polyps, which represent the inflammatory response to Mycobacterium tuberculosis. - These granulations can be extensive and fill the middle ear space. *Chronic progressive hearing loss* - **Chronic progressive conductive hearing loss** is a common symptom due to effusions, ossicular destruction, and tympanic membrane perforations. - If left untreated, the hearing loss can become severe and even sensorineural due to inner ear involvement.

Q: A patient presented with painless chronic otorrhea, a history of tuberculosis exposure, and a positive mycobacterial culture. The following picture of the Tympanic Membrane was obtained. What is the most probable diagnosis (marked with arrow)?

Tuberculous Otitis Media. ***Tuberculous Otitis Media*** - The image likely shows multiple **perforations** of the tympanic membrane (marked with an arrow), often described as "multiple peppered" perforations, which is a classic, though not exclusive, sign of **tuberculous otitis media**. - Other features often include **painless otorrhoea**, granulation tissue, and occasional facial nerve palsy, which distinguish it from typical bacterial infections. *Syphilis-related Otitis Media* - **Syphilis** primarily causes sensorineural hearing loss, vestibular symptoms, and interstitial keratitis as part of congenital or tertiary syphilis. - While it can involve the middle ear, it rarely presents with multiple tympanic membrane perforations as the primary finding. *Pseudomonas Otitis Media* - **Pseudomonas otitis media** typically causes a severe, foul-smelling discharge and can lead to extensive tissue destruction, especially in cases of malignant otitis externa. - While it can cause perforations, the pattern of multiple, often smaller, perforations seen in the image is less characteristic of typical Pseudomonas infection. *Fungal Otitis Media (otomycosis)* - **Otomycosis** is characterized by the presence of visible fungal hyphae or spores on the ear canal and tympanic membrane, often appearing as fluffy white, black, or grey debris. - While it can cause inflammation and occasional perforation, the distinct appearance of multiple, usually clear-edged perforations is not the hallmark of a fungal infection.

Q: Which perforation of the tympanic membrane is most commonly seen with tubotympanic CSOM?

Central. ***Central*** - A **central perforation** of the tympanic membrane is the most common type seen in **tubotympanic chronic suppurative otitis media (CSOM)**. - This type of perforation involves the **pars tensa** of the tympanic membrane, leaving an intact annulus. *Anterosuperior* - While perforations can occur anywhere, an **anterosuperior perforation** is not the hallmark of tubotympanic CSOM. - This location does not specifically correlate with the characteristic inflammatory patterns seen in tubotympanic disease. *Posterosuperior* - A **posterosuperior perforation** is more often associated with **atticoantral CSOM** due to **cholesteatoma formation**. - **Cholesteatoma** typically begins in the pars flaccida or posterosuperior pars tensa, which is different from tubotympanic CSOM. *Posteroinferior* - A **posteroinferior perforation** is not the most typical presentation for tubotympanic CSOM. - This location does not specifically differentiate it from other forms of otitis media or reflect the primary pathology of tubotympanic disease.

Q: All of the following are features of Tubotympanic CSOM except which of the following?

Extreme pain. ***Extreme pain*** - **Extreme pain** is NOT a characteristic feature of **tubotympanic CSOM**. This type is typically associated with a history of **painless otorrhea**. - Tubotympanic CSOM is considered the "safe" type with inflammation limited to the mucosa without bone erosion. - The presence of severe pain should raise suspicion for complications or the **atticoantral (unsafe) type** of CSOM. *Profuse discharge* - **Profuse, mucoid** or **mucopurulent discharge** is a hallmark feature of tubotympanic CSOM. - This discharge results from chronic inflammation of the **middle ear mucoperiosteum** through a central perforation in the **pars tensa**. - The discharge is typically non-foul smelling (unlike atticoantral CSOM). *Hearing loss* - **Conductive hearing loss** is a universal feature of tubotympanic CSOM. - Results from **tympanic membrane perforation**, middle ear effusion, and potential ossicular discontinuity. - The degree of hearing loss correlates with the size and location of the perforation. *Facial nerve paralysis* - Facial nerve paralysis is **NOT a typical feature** of tubotympanic (safe) CSOM. - This complication is characteristically associated with **atticoantral (unsafe) CSOM** with cholesteatoma causing bone erosion. - While theoretically possible in very advanced neglected tubotympanic disease, it would indicate transformation to unsafe disease or secondary complications. - **Note:** Some sources may list this as a rare complication, but it is not a characteristic feature distinguishing tubotympanic CSOM, making this option potentially ambiguous in an "EXCEPT" question format.

Q: Most common cause of otitis externa is

Bacterial infection. ***Bacterial infection*** - The most common pathogens causing **otitis externa** are bacteria, primarily **Pseudomonas aeruginosa** and **Staphylococcus aureus**. - This condition, often called "swimmer's ear," is favored by moisture in the ear canal, which creates a conducive environment for bacterial growth. *Fungal infection* - While fungal infections (otomycosis) can cause otitis externa, they are **less common** than bacterial causes. - Fungi like *Aspergillus* and *Candida* are typically involved, often in immunocompromised individuals or after prolonged antibiotic use. *Seborrheic disease* - **Seborrheic dermatitis** can affect the ear canal and surrounding skin, leading to flaking, itching, and inflammation. - However, it is a primary skin condition and does not directly cause infectious otitis externa, although it can predispose to secondary infections. *Herpes Zoster* - **Herpes zoster oticus** (Ramsay Hunt syndrome) is a viral infection affecting the facial nerve, causing a painful rash, facial paralysis, and hearing loss. - It is a specific viral etiology with distinct neurological symptoms and is not a common cause of general otitis externa.

Q: Otosclerosis affects which bone?

Stapes. ***Stapes*** - **Otosclerosis** is a condition characterized by abnormal bone growth in the middle ear, specifically around the **stapes footplate**. - This abnormal growth fixates the stapes, preventing it from vibrating properly and leading to **conductive hearing loss**. - **Fenestral otosclerosis** (most common type) directly affects the oval window and stapes footplate. *Incus* - The **incus** is the middle ossicle in the chain, between the malleus and the stapes. - While it can be affected by other middle ear pathologies, otosclerosis primarily targets the **stapes**. *Malleus* - The **malleus** is the outermost ossicle, attached to the eardrum. - Its involvement in otosclerosis is rare and indirect, as the primary site of disease is the **stapes**. *Cochlea* - **Cochlear (retrofenestral) otosclerosis** can occur but is less common and typically causes **sensorineural hearing loss**. - The classic presentation of otosclerosis involves **stapedial fixation** causing conductive hearing loss, not primary cochlear involvement.

Question 1

What is the primary treatment for attico-antral disease?

Accepted Answer

Modified radical mastoidectomy

Answer

Antibiotics

Answer

Grommet insertion

Answer

Syringing

Question 2

Which cranial nerve is most commonly damaged in Chronic Suppurative Otitis Media (CSOM)?

Accepted Answer

VII

Answer

IV

Answer

VI

Answer

III

Question 3

A 5-year-old child presents with reduced hearing for the past 2-3 months. Based on the otoscopy findings shown, what is the most likely diagnosis?

Accepted Answer

Otitis media with effusion

Answer

Myringitis

Answer

Acute ear infection

Answer

Air in the middle ear

Question 4

Which diagnosis is most consistent with this otoscopic image?

Accepted Answer

Partial cerumen accumulation in the external auditory canal

Answer

Keratosis obturans

Answer

External auditory canal cholesteatoma

Answer

Acquired middle-ear cholesteatoma

Question 5

Which of the following is NOT a characteristic of Tubercular Otitis Media?

Accepted Answer

Painful otorrhea

Answer

Pale granulations

Answer

Multiple perforations

Answer

Chronic progressive hearing loss

Question 6

A patient presented with painless chronic otorrhea, a history of tuberculosis exposure, and a positive mycobacterial culture. The following picture of the Tympanic Membrane was obtained. What is the most probable diagnosis (marked with arrow)?

Accepted Answer

Tuberculous Otitis Media

Answer

Syphilis-related Otitis Media

Answer

Pseudomonas Otitis Media

Answer

Fungal Otitis Media (otomycosis)

Question 7

Which perforation of the tympanic membrane is most commonly seen with tubotympanic CSOM?

Accepted Answer

Central

Answer

Anterosuperior

Answer

Posterosuperior

Answer

Posteroinferior

Question 8

All of the following are features of Tubotympanic CSOM except which of the following?

Accepted Answer

Extreme pain

Answer

Profuse discharge

Answer

Hearing loss

Answer

Facial nerve paralysis

Question 9

Most common cause of otitis externa is

Accepted Answer

Bacterial infection

Answer

Fungal infection

Answer

Seborrheic disease

Answer

Herpes Zoster

Question 10

Otosclerosis affects which bone?

Accepted Answer

Stapes

Answer

Incus

Answer

Malleus

Answer

Cochlea

Diseases of the Ear — MCQs

Diseases of the Ear — MCQs

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