Diseases of the Ear Practice Questions

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: 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 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 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: A patient presented with the following picture of the Tympanic Membrane. 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: Identify the condition of the given image:

Keratosis obturans. ***Keratosis obturans*** - The image shows a **plug of desquamated keratin** filling the external auditory canal. This is the characteristic appearance of keratosis obturans. - This condition is often associated with severe pain, conductive hearing loss, and sometimes **bone erosion** of the external auditory canal. *Acquired cholesteatoma* - This condition involves a **retraction pocket** or **perforation** of the tympanic membrane with ingrowth of keratinizing squamous epithelium into the middle ear, forming a sac. - The image does not show a retraction pocket or a middle ear mass, which are typical features of acquired cholesteatoma. *Congenital cholesteatoma* - This is a **pearly white mass** located behind an intact tympanic membrane, without any history of ear infections or perforations. - The image shows an external auditory canal filled with a plug, not a middle ear mass behind an intact tympanic membrane. *Rupture of tympanic membrane* - A rupture of the tympanic membrane would present as a **visible defect or perforation** in the eardrum. - The image shows an accumulation of material within the ear canal, and the tympanic membrane itself is not clearly visible or perforated in a manner indicative of rupture.

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: 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: Which of the following is a cause of objective tinnitus?

Carotid artery aneurysm. ***Carotid artery aneurysm*** - An **aneurysm** of the **carotid artery** can cause pulsatile tinnitus that is audible to others (objective) due to turbulent blood flow. - The sounds originate from vascular structures within or near the ear, making them detectable by a clinician. *Impacted Wax* - **Impacted cerumen** is a common cause of **subjective tinnitus**, where the sound is heard only by the patient. - It can muffle external sounds and alter the perception of internal body sounds, but it does not produce a sound audible to others. *Meniere's disease* - **Meniere's disease** is characterized by **subjective tinnitus**, along with vertigo, hearing loss, and aural fullness. - The tinnitus in Meniere's is typically a low-pitched roaring or buzzing sound, audible only to the affected individual. *Ototoxic drugs* - **Ototoxic drugs** (e.g., aspirin, aminoglycosides) commonly induce **subjective tinnitus** as a side effect. - These medications primarily damage inner ear structures, leading to perceived sounds that are not externally measurable.

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.

Question 1

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

Accepted Answer

VII

Answer

IV

Answer

VI

Answer

III

Question 2

What is the primary treatment for attico-antral disease?

Accepted Answer

Modified radical mastoidectomy

Answer

Antibiotics

Answer

Grommet insertion

Answer

Syringing

Question 3

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 4

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 5

A patient presented with the following picture of the Tympanic Membrane. 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 6

Identify the condition of the given image:

Accepted Answer

Keratosis obturans

Answer

Acquired cholesteatoma

Answer

Congenital cholesteatoma

Answer

Rupture of tympanic membrane

Question 7

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 8

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

Accepted Answer

Central

Answer

Anterosuperior

Answer

Posterosuperior

Answer

Posteroinferior

Question 9

Which of the following is a cause of objective tinnitus?

Accepted Answer

Carotid artery aneurysm

Answer

Impacted Wax

Answer

Meniere's disease

Answer

Ototoxic drugs

Question 10

Most common cause of otitis externa is

Accepted Answer

Bacterial infection

Answer

Fungal infection

Answer

Seborrheic disease

Answer

Herpes Zoster

Diseases of the Ear — MCQs

Diseases of the Ear — MCQs

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