Diseases of the Ear — MCQs
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Which of the following is NOT a characteristic of Tubercular Otitis Media?
Identify the condition of the given image:
All of the following are features of Tubotympanic CSOM except which of the following?
Which perforation of the tympanic membrane is most commonly seen with tubotympanic CSOM?
Most common cause of otitis externa is
Otosclerosis affects which bone?
In otosclerosis, which structure is primarily affected?
In which condition is the Schwartze sign observed?
All are intracranial complications of otitis media except which of the following?
What is the treatment of choice for atticoantral type of chronic suppurative otitis media (CSOM)?
Diseases of the Ear Indian Medical PG Practice Questions and MCQs
Question 291: Which of the following is NOT a characteristic of Tubercular Otitis Media?
- A. Pale granulations
- B. Multiple perforations
- C. Painful otorrhea (Correct Answer)
- D. Chronic progressive hearing loss
Explanation: ***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.
Question 292: Identify the condition of the given image:
- A. Acquired cholesteatoma
- B. Congenital cholesteatoma
- C. Rupture of tympanic membrane
- D. Keratosis obturans (Correct Answer)
Explanation: ***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.
Question 293: All of the following are features of Tubotympanic CSOM except which of the following?
- A. Profuse discharge
- B. Hearing loss
- C. Extreme pain (Correct Answer)
- D. Facial nerve paralysis
Explanation: ***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.
Question 294: Which perforation of the tympanic membrane is most commonly seen with tubotympanic CSOM?
- A. Central (Correct Answer)
- B. Anterosuperior
- C. Posterosuperior
- D. Posteroinferior
Explanation: ***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.
Question 295: Most common cause of otitis externa is
- A. Fungal infection
- B. Bacterial infection (Correct Answer)
- C. Seborrheic disease
- D. Herpes Zoster
Explanation: ***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 296: Otosclerosis affects which bone?
- A. Stapes (Correct Answer)
- B. Incus
- C. Malleus
- D. Cochlea
Explanation: ***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 297: In otosclerosis, which structure is primarily affected?
- A. Round window
- B. Utricle
- C. Oval window
- D. Foot plate of stapes (Correct Answer)
Explanation: ***Foot plate of stapes*** - Otosclerosis is a disease of the **temporal bone** that causes abnormal bone growth, primarily affecting the footplate of the stapes. - This abnormal bone growth leads to the **fixation of the stapes** in the oval window, impairing sound conduction and causing **conductive hearing loss**. *Oval window* - While the oval window is the location where the stapes articulates, otosclerosis specifically affects the **footplate of the stapes**, causing it to become fixed within the oval window. - The oval window itself is a structure of the inner ear, but the primary pathology involves the **stapes bone**. *Round window* - The round window plays a role in relieving pressure in the **cochlea** by bulging outwards when the oval window bulges inwards. - It is **not directly affected** by the abnormal bone growth characteristic of otosclerosis. *Utricle* - The utricle is a part of the **vestibular system** in the inner ear, responsible for sensing linear acceleration and head tilt. - It is **not involved** in the pathogenesis of otosclerosis, which is primarily a conductive hearing loss disorder.
Question 298: In which condition is the Schwartze sign observed?
- A. Glomus Jugulare
- B. Otosclerosis (Correct Answer)
- C. Acoustic neuroma
- D. Meniere's disease
Explanation: ***Otosclerosis*** - The **Schwartze sign** is a reddish blush seen through the tympanic membrane, indicative of increased vascularity over the promontory. - It is a classic clinical finding in **active otosclerosis**, distinguishing it from inactive forms. *Glomus Jugulare* - This is a highly **vascular tumor** of the middle ear and mastoid, often presenting with pulsating tinnitus and hearing loss. - While vascularity is present, it manifests as a **reddish-blue mass behind the tympanic membrane**, not the diffuse blush characteristic of Schwartze sign. *Meniere's disease* - Characterized by episodes of **vertigo, fluctuating hearing loss, tinnitus**, and aural fullness due to endolymphatic hydrops. - It does not present with any specific otoscopic findings like the Schwartze sign. *Acoustic neuroma* - This is a **benign tumor of the vestibulocochlear nerve (CN VIII)**, typically causing progressive unilateral sensorineural hearing loss, tinnitus, and balance issues. - It does not produce any visible changes on otoscopy and therefore lacks the Schwartze sign.
Question 299: All are intracranial complications of otitis media except which of the following?
- A. Brain abscess
- B. Hydrocephalus
- C. Lateral sinus thrombophlebitis
- D. Facial nerve palsy (Correct Answer)
Explanation: ***Facial nerve palsy*** - This is an **extracranial complication** of otitis media affecting the **facial nerve within the temporal bone**, not an intracranial structure. - The facial nerve (CN VII) runs through the **fallopian canal** in the temporal bone and can be affected by inflammation from adjacent mastoid or middle ear infection. - Classified as a **temporal bone complication** rather than an intracranial complication. *Lateral sinus thrombophlebitis* - This is a true **intracranial complication** involving thrombosis of the **sigmoid and lateral venous sinuses** within the cranial cavity. - Results from direct extension of infection through the **mastoid tegmen** or via septic thrombophlebitis. - Presents with features of sepsis, headache, and papilledema. *Brain abscess* - A severe **intracranial complication** representing focal suppurative infection within the **brain parenchyma** (commonly temporal lobe or cerebellum). - Occurs through direct extension via bony erosion, retrograde thrombophlebitis, or hematogenous spread. - Requires urgent neurosurgical intervention. *Hydrocephalus* - An **intracranial complication** that can occur secondary to **otogenic meningitis** or **lateral sinus thrombosis**. - Results from impaired CSF absorption or obstruction of CSF pathways. - More common in pediatric otitis media with CNS complications.
Question 300: What is the treatment of choice for atticoantral type of chronic suppurative otitis media (CSOM)?
- A. Tympanoplasty
- B. Modified radical mastoidectomy (Correct Answer)
- C. None of the options
- D. Antibiotics
Explanation: ***Modified radical mastoidectomy*** - The **atticoantral type of CSOM** is characterized by active **cholesteatoma**, which requires surgical removal to prevent further bone erosion and complications. - A **modified radical mastoidectomy** is the treatment of choice as it removes the cholesteatoma and diseased mastoid air cells while aiming to preserve residual hearing. *Antibiotics* - While topical or systemic antibiotics may be used to control acute infections or discharge in CSOM, they do not eradicate **cholesteatoma**. - **Cholesteatoma** is an epidermoid cyst that requires surgical excision, as antibiotics alone cannot resolve it. *Tympanoplasty* - **Tympanoplasty** is primarily performed to reconstruct the tympanic membrane (eardrum) and/or the ossicular chain to restore hearing. - It is typically indicated for the **tubotympanic type of CSOM** (safe type) without cholesteatoma, not for the atticoantral type which involves cholesteatoma. *None of the options* - This option is incorrect because **modified radical mastoidectomy** is a well-established and necessary treatment for the atticoantral type of CSOM involving cholesteatoma.
Practice by Chapter
Otitis Externa
Practice Questions
Acute Otitis Media
Practice Questions
Chronic Otitis Media
Practice Questions
Complications of Otitis Media
Practice Questions
Otosclerosis
Practice Questions
Presbycusis
Practice Questions
Sudden Sensorineural Hearing Loss
Practice Questions
Noise-Induced Hearing Loss
Practice Questions
Ménière's Disease
Practice Questions
Benign Paroxysmal Positional Vertigo
Practice Questions
Vestibular Neuritis
Practice Questions
Tumors of the Ear and Temporal Bone
Practice Questions
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