Complications of Otitis Media — MCQs
Subdural empyema is a complication of all the following conditions except?
A patient presents with ear discharge. The CT image is shown below. Based on the clinical presentation and imaging, what is the most likely diagnosis?
Picket fence fever is a feature of -
Treatment of choice for CSOM with vertigo and facial nerve palsy is:
A 60-year-old diabetic patient presents with an extremely painful lesion in the external ear and otorrhea that is not responding to antibiotics, accompanied by granulation-type tissue in the external ear, bony erosion, and facial nerve palsy. The most likely diagnosis is
Neurological complications of meningitis include all of the following except:
What is the treatment of choice for atticoantral type of chronic suppurative otitis media (CSOM)?
All are intracranial complications of otitis media except which of the following?
In which condition is light reflex distortion typically observed?
Gradenigo syndrome is characterized by all except?
Complications of Otitis Media Indian Medical PG Practice Questions and MCQs
Question 1: Subdural empyema is a complication of all the following conditions except?
- A. Skull vault osteomyelitis
- B. Boil over face (Correct Answer)
- C. Frontal Sinusitis
- D. Middle ear disease
Explanation: The enriched explanation for the question is as follows: ***Boil over face*** - A **facial boil** (furuncle) is typically a superficial skin infection that, while potentially serious, is **less likely to directly lead to subdural empyema** compared to infections of deeper structures or bones adjacent to the brain. - While local spread is possible, the direct anatomical pathways for subdural involvement are not as pronounced as with other listed conditions. *Skull vault osteomyelitis* - **Osteomyelitis of the skull vault** can directly extend to the intracranial space, as the dura mater adheres closely to the inner table of the skull. [1] - Infection can erode through the bone, leading to a **subdural collection of pus**. *Frontal Sinusitis* - **Frontal sinusitis** is a common cause of subdural empyema, especially in adolescents and young adults, due to the thin posterior wall of the frontal sinus. [1] - The infection can spread through **direct extension** or via **valveless emissary veins** connecting the sinus mucosa to the intracranial venous system. *Middle ear disease* - **Chronic otitis media** and **mastoiditis** can lead to intracranial complications, including subdural empyema, through direct spread or via venous thrombophlebitis. - Infection can erode the tegmen tympani or mastoid air cells, allowing pus to collect in the **subdural space**.
Question 2: A patient presents with ear discharge. The CT image is shown below. Based on the clinical presentation and imaging, what is the most likely diagnosis?
- A. Temporal lobe abscess (Correct Answer)
- B. Extradural abscess
- C. Cerebellar abscess
- D. Meningitis
Explanation: ***Temporal lobe abscess*** - The CT scan shows a **ring-enhancing lesion** in the **temporal lobe**, which is characteristic of a brain abscess. - **Ear discharge** (otorrhea), particularly from otitis media, is a common predisposing factor for temporal lobe abscesses due to the proximity of the middle ear and mastoid to the temporal lobe. - Otogenic brain abscesses account for a significant proportion of intracranial complications from ear infections, with the temporal lobe being the most common location. *Extradural abscess* - An **extradural abscess** would typically be located between the dura mater and the skull, often presenting as a **lenticular or biconvex collection** displacing the dura and brain, not within the brain parenchyma as seen here. - While ear infections can lead to extradural abscesses, the imaging clearly shows an intraparenchymal lesion. *Cerebellar abscess* - A **cerebellar abscess** would be located in the cerebellum (posterior fossa), which is a different anatomical location from the lesion seen in the image (which is in the supratentorial compartment, consistent with the temporal lobe). - Although ear infections can also lead to cerebellar abscesses, the lesion's position on the CT scan does not correspond to the cerebellum. *Meningitis* - **Meningitis** is an inflammation of the meninges and typically manifests on CT as **leptomeningeal enhancement**, particularly in the sulci and basal cisterns, rather than a discrete, encapsulated mass lesion like an abscess. - While ear discharge can be associated with meningitis, the imaging findings strongly point to an abscess, not diffuse meningeal inflammation.
Question 3: Picket fence fever is a feature of -
- A. Lateral sinus thrombophlebitis (Correct Answer)
- B. Acute mastoiditis
- C. Atticoantral CSOM
- D. Bell's Palsy
Explanation: ***Lateral sinus thrombophlebitis*** - **Picket fence fever**, characterized by high spiking fevers followed by abrupt drops to normal or subnormal temperature, is a classic symptom of **lateral sinus thrombophlebitis** due to septic emboli. - This condition is a serious complication of otitis media or mastoiditis, where infection from the middle ear or mastoid spreads to the **dural venous sinuses**. *Acute mastoiditis* - Acute mastoiditis typically presents with **postauricular pain**, swelling, and erythema, often accompanied by ear discharge and fever, but not specifically picket fence fever. - While mastoiditis can lead to lateral sinus thrombophlebitis, it is the underlying infection, not the defining feature of the fever pattern. *Atticoantral CSOM* - **Atticoantral chronic suppurative otitis media (CSOM)**, also known as cholesteatoma, is characterized by chronic ear discharge, hearing loss, and often cholesteatoma formation. - While it can lead to complications, significant systemic fever patterns like picket fence fever are not typical for uncomplicated atticoantral CSOM itself. *Bell's Palsy* - **Bell's Palsy** is an acute peripheral facial nerve paralysis of unknown cause, presenting with unilateral facial weakness or paralysis. - It is not associated with fever, particularly not the cyclical spiking pattern described as picket fence fever, as it is a neurological condition.
Question 4: Treatment of choice for CSOM with vertigo and facial nerve palsy is:
- A. Myringoplasty
- B. Antibiotics and labyrinthine sedative
- C. Immediate mastoid exploration (Correct Answer)
- D. Labyrinthectomy
Explanation: ***Immediate mastoid exploration*** - Vertigo and facial nerve palsy in the context of CSOM (Chronic Suppurative Otitis Media) indicate **intracranial complications** or significant **bone erosion** by the cholesteatoma, necessitating urgent surgical intervention. - **Mastoid exploration** allows for removal of the cholesteatoma, drainage of infection, and decompression of the facial nerve, preventing irreversible damage and life-threatening complications. *Myringoplasty* - This procedure involves **repairing the tympanic membrane** (eardrum) and is primarily performed for simple perforations without labyrinthine involvement or facial nerve complications. - It would not address the underlying pathology of **cholesteatoma erosion** or the serious symptoms of vertigo and facial nerve palsy. *Antibiotics and labyrinthine sedative* - While antibiotics may be part of the management for active infection, they alone cannot resolve an extensive **cholesteatoma** causing bone destruction and nerve compression. - **Labyrinthine sedatives** might temporarily relieve vertigo but do not treat the causative disease process, which requires surgical intervention. *Labyrinthectomy* - This procedure involves **destroying the labyrinth** to alleviate intractable vertigo, typically reserved for severe, unilateral Meniere's disease or non-functioning labyrinths. - It is a **destructive procedure** that would result in complete hearing loss and would not address the underlying **cholesteatoma** or the facial nerve palsy.
Question 5: A 60-year-old diabetic patient presents with an extremely painful lesion in the external ear and otorrhea that is not responding to antibiotics, accompanied by granulation-type tissue in the external ear, bony erosion, and facial nerve palsy. The most likely diagnosis is
- A. Malignant otitis externa (Correct Answer)
- B. Nasopharyngeal carcinoma
- C. Chronic suppurative otitis media
- D. Acute suppurative otitis media
Explanation: **Malignant otitis externa** - The combination of **severe ear pain**, **granulation tissue** in the external ear, **bony erosion**, **facial nerve palsy**, and unresponsiveness to antibiotics in a **diabetic patient** is highly characteristic of malignant otitis externa. - This aggressive infection, typically caused by *Pseudomonas aeruginosa*, can spread from the external auditory canal to the surrounding bone and soft tissues, leading to cranial nerve involvement. *Nasopharyngeal carcinoma* - While nasopharyngeal carcinoma can cause cranial nerve palsies due to local invasion, it typically presents with symptoms such as **nasal obstruction**, **epistaxis**, or **unilateral serous otitis media** due to Eustachian tube obstruction. - It would not typically manifest with severe external ear pain, otorrhea, or visible granulation tissue in the external auditory canal. *Chronic suppurative otitis media* - Chronic suppurative otitis media is characterized by **persistent ear discharge** through a tympanic membrane perforation and can lead to **cholesteatoma** formation. - While it can cause bony erosion and, in advanced cases, facial nerve palsy, it is less likely to present with the severe external ear pain and granulation tissue pattern described in this diabetic patient, who is more susceptible to aggressive external ear infections. *Acute suppurative otitis media* - Acute suppurative otitis media is an infection of the **middle ear**, typically presenting with ear pain, fever, and a **bulging tympanic membrane**. - It does not involve granulation tissue in the external ear, bony erosion, or facial nerve palsy as initial symptoms, and it primarily affects the middle ear cavity, not the external auditory canal or surrounding bone.
Question 6: Neurological complications of meningitis include all of the following except:
- A. Increased intracranial pressure
- B. Brain abscess
- C. Subdural effusions
- D. Cerebral hamartoma (Correct Answer)
Explanation: Cerebral hamartoma - A cerebral hamartoma is a benign, tumor-like malformation of abnormally organized mature brain tissue; it is a developmental anomaly and not a complication of meningitis. - Unlike the other options, it does not represent an inflammatory, infectious, or pressure-related sequela of meningeal infection. Increased intracranial pressure - Increased intracranial pressure (ICP) is a common and serious complication of meningitis due to cerebral edema, hydrocephalus, or vasodilation. - Elevated ICP can lead to herniation, neurological deficits, and even death if not managed promptly. Brain abscess - A brain abscess is a localized collection of pus within the brain parenchyma that can develop as a focal complication of bacterial meningitis, particularly in cases of hematogenous spread or direct extension of infection [1]. - This serious condition causes focal neurological deficits and requires aggressive treatment. Subdural effusions - Subdural effusions are accumulations of sterile or infected fluid in the subdural space, most commonly seen in infants and young children with bacterial meningitis. - While they can be asymptomatic, large effusions may cause increased ICP or focal neurological signs requiring drainage.
Question 7: 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.
Question 8: 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 9: In which condition is light reflex distortion typically observed?
- A. ASOM (Correct Answer)
- B. Glomus
- C. OME
- D. CSOM
Explanation: ***ASOM*** - In **Acute Suppurative Otitis Media (ASOM)**, there is inflammation and fluid accumulation in the middle ear, causing the **tympanic membrane to bulge and distort**. - This **distortion** of the tympanic membrane directly leads to an **abnormal or absent light reflex** when examined with an otoscope. *Glomus* - A **glomus tumor** is a rare, benign, highly vascular tumor typically found in the middle ear. - While it may cause conductive hearing loss and pulsatile tinnitus, it does not primarily involve changes to the **light reflex** as a direct result of tympanic membrane distortion. *OME* - **Otitis Media with Effusion (OME)**, or "glue ear," involves thick fluid behind the tympanic membrane but without acute inflammation. - The tympanic membrane may appear dull or retracted, and the light reflex can be diffuse or absent, but it's typically not described as "distorted" in the same way as with acute bulging. *CSOM* - **Chronic Suppurative Otitis Media (CSOM)** involves a persistent perforation of the tympanic membrane and chronic discharge. - The key feature is the **perforation**, which would mean the light reflex itself (reflection off an intact drum) would be absent or severely altered, rather than simply distorted.
Question 10: Gradenigo syndrome is characterized by all except?
- A. Persistent ear discharge
- B. Retro-orbital pain
- C. Diplopia
- D. Vertigo (Correct Answer)
Explanation: ***Vertigo*** - **Vertigo** is a sensation of spinning or dizziness and is not a classic component of Gradenigo syndrome. - While inner ear inflammation or damage can lead to vertigo, Gradenigo syndrome primarily involves structures in the **petrous apex**. *Persistent ear discharge* - **Persistent ear discharge** (otorrhea) is a key feature, indicating chronic otitis media or mastoiditis, which is the underlying cause. - This discharge suggests **inflammation or infection** extending from the middle ear. *Retro-orbital pain* - **Retro-orbital pain** results from involvement of the **trigeminal nerve** (cranial nerve V), which often passes close to the inflamed petrous apex. - This pain is typically localized behind the eye and can be severe. *Diplopia* - **Diplopia** (double vision) is caused by paralysis of the **abducens nerve** (cranial nerve VI), which is a characteristic finding in Gradenigo syndrome. - The abducens nerve runs within Dorello's canal near the petrous apex, making it vulnerable to inflammation.
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