Otology Practice Questions

Q: Types of tympanoplasty include all except?

Schwartz operation. **Explanation:** Tympanoplasty is defined as a surgical procedure to eradicate disease in the middle ear and reconstruct the hearing mechanism, with or without grafting of the tympanic membrane. **Why Schwartz Operation is the Correct Answer:** The **Schwartz operation** (also known as **Cortical Mastoidectomy** or Simple Mastoidectomy) is a procedure where the mastoid air cells are exenterated without affecting the middle ear structures. It is primarily used for cases of acute coalescent mastoiditis. Since it does not involve the reconstruction of the tympanic membrane or the ossicular chain, it is not classified as a type of tympanoplasty. **Analysis of Other Options:** * **Myringoplasty (Type I Tympanoplasty):** This involves the repair of the tympanic membrane perforation without any ossicular reconstruction. * **Myringostapediopexy (Type III Tympanoplasty):** In this procedure, the tympanic membrane (or graft) is placed directly in contact with the head of the stapes. It is performed when the malleus and incus are absent but the stapes is mobile. * **Fenestration (Type V Tympanoplasty):** This is performed when the stapes footplate is fixed. A new window (fenestra) is created in the horizontal semicircular canal, and the graft is placed over it. **High-Yield Clinical Pearls for NEET-PG:** * **Wullstein’s Classification:** Remember the 5 types. Type II involves the graft resting on the incus; Type IV involves the graft resting on the mobile stapes footplate (shield effect). * **Wullstein vs. Paparella:** Wullstein classified tympanoplasty into 5 types, while Paparella added a 6th type (Type VI: Sono-inversion). * **Overlay vs. Underlay:** Underlay is the most common technique used for grafting (graft placed medial to the annulus). * **Schwartz Sign:** Do not confuse the Schwartz operation with the **Schwartz sign** (Flemingo flush), which is seen in active Otosclerosis.

Q: Which of the following is NOT true about otitic barotrauma?

Occurs during sudden ascent in aircraft. **Explanation:** Otitic barotrauma (Aerotitis media) occurs due to a failure of the Eustachian tube to equalize pressure between the middle ear and the atmosphere. **Why Option D is the correct answer (False statement):** Otitic barotrauma primarily occurs during **sudden descent** in an aircraft or during diving. During descent, atmospheric pressure increases rapidly, creating a relative negative pressure in the middle ear. If the Eustachian tube is blocked (e.g., due to URTI or allergy), it collapses, leading to a "vacuum effect" that causes pain and fluid accumulation. Conversely, during ascent, the middle ear pressure is higher than the atmosphere, and the Eustachian tube usually opens passively to vent air, making barotrauma rare during ascent. **Analysis of other options:** * **A. Conductive deafness:** The negative pressure causes fluid/blood effusion (haemotympanum) or retraction of the membrane, which hinders sound conduction. * **B. Retracted tympanic membrane:** This is a hallmark finding due to the negative intratympanic pressure pulling the membrane inward. * **C. Catheterization:** Eustachian tube catheterization or Politzerization can be used as a treatment modality to forcibly introduce air into the middle ear to equalize pressure once the acute phase of inflammation subsides. **High-Yield Clinical Pearls for NEET-PG:** * **Teed’s Classification:** Used to grade the severity of tympanic membrane changes in barotrauma (Grade 0 to 5). * **Prevention:** Advise patients to swallow, chew gum, or perform the **Valsalva maneuver** during descent. * **Diving:** In divers, it is known as "ear squeeze." * **Contraindication:** Patients with active URTI should avoid flying or diving to prevent barotrauma.

Q: Which abscess is related to the sternocleidomastoid muscle?

Bezold abscess. **Explanation:** The correct answer is **Bezold abscess**. This condition occurs as a complication of acute coalescent mastoiditis. When the mastoid tip is thin-walled and well-pneumatized, pus can erode through the inner aspect of the mastoid tip (at the digastric notch). The pus then tracks deep to the **sternocleidomastoid (SCM)** muscle, presenting as a painful, fluctuant swelling in the upper neck. **Analysis of Options:** * **Luc abscess:** This is a subperiosteal abscess resulting from the tracking of pus through the external auditory canal wall. It presents as a swelling in the ear canal, unrelated to the SCM. * **Citelli abscess:** This occurs when pus tracks through the mastoid tip but follows the posterior belly of the digastric muscle to the **digastric fossa**. It presents as a swelling in the occipital region/posterior neck. * **Parapharyngeal abscess:** This involves the lateral pharyngeal space. While it presents with neck swelling and trismus, its origin is typically odontogenic or tonsillar, not the mastoid tip. **High-Yield Clinical Pearls for NEET-PG:** * **Bezold Abscess:** Pus is deep to the SCM; the swelling is often firm because it is covered by the thick muscle and fascia. * **Citelli Abscess:** Pus tracks along the digastric muscle. * **Mastoiditis Triad:** Reservoir sign (ear canal refills with pus after mopping), sagging of the posterosuperior canal wall, and mastoid tenderness. * **Imaging:** Contrast-enhanced CT (CECT) is the gold standard for diagnosing these complications.

Q: A 70-year-old man presents with tinnitus. What is the most probable diagnosis?

Acoustic neuroma. ***Acoustic neuroma*** - **Acoustic neuroma** (vestibular schwannoma) commonly presents with **unilateral tinnitus** in elderly patients, often as the first symptom before hearing loss develops. - **MRI findings** typically show a **mass in the internal auditory canal (IAC)** or **cerebellopontine angle (CPA)**, which is characteristic for this benign tumor. *Acute suppurative otitis media (ASOM)* - ASOM typically presents with **acute ear pain**, **fever**, and **purulent discharge**, which are not mentioned in this case. - More common in **children** and usually associated with **recent upper respiratory tract infection**. *Labyrinthitis* - Primarily presents with **acute vertigo** and **nausea/vomiting** rather than isolated tinnitus as the main symptom. - Usually follows **viral infection** and symptoms are typically **self-limiting** within days to weeks. *Acoustic trauma* - Results from **sudden loud noise exposure** or **chronic noise exposure** causing immediate hearing damage. - Would have a **clear history of noise exposure** and typically presents with **sudden hearing loss** rather than gradual onset in elderly patients.

Q: A diabetic female patient presents with severe ear pain, granulation tissue in the external auditory canal, and facial palsy. What is the most likely diagnosis?

Malignant otitis externa. **Explanation:** The clinical presentation of a diabetic patient with severe otalgia, granulation tissue at the bony-cartilaginous junction of the external auditory canal (EAC), and cranial nerve involvement (facial palsy) is a classic description of **Malignant Otitis Externa (Necrotizing Otitis Externa).** 1. **Why Option A is Correct:** Malignant Otitis Externa is a life-threatening infection, typically caused by *Pseudomonas aeruginosa*, that occurs in elderly diabetics or immunocompromised individuals. The infection starts in the EAC and spreads to the skull base (osteomyelitis). The presence of **granulation tissue** is a hallmark sign. Facial nerve palsy indicates advanced disease and spread to the stylomastoid foramen. 2. **Why Other Options are Incorrect:** * **Option B (Herpes Zoster Oticus/Ramsay Hunt Syndrome):** While it presents with facial palsy and ear pain, it is characterized by **vesicular eruptions** in the concha and EAC, not granulation tissue. * **Option C (Otomycosis):** This is a fungal infection causing itching and debris (wet newspaper appearance). It does not cause bone destruction, granulation tissue, or cranial nerve palsies. **High-Yield Clinical Pearls for NEET-PG:** * **Organism:** *Pseudomonas aeruginosa* is the most common causative agent. * **Pathognomonic Sign:** Granulation tissue at the floor of the EAC (bony-cartilaginous junction). * **Investigation of Choice:** **CT scan** to assess bone destruction; **Technetium-99m scan** for early diagnosis (detects osteoblastic activity); **Gallium-67 scan** to monitor treatment response/resolution. * **Treatment:** Long-term intravenous anti-pseudomonal antibiotics (e.g., Ciprofloxacin, Ceftazidime) and strict glycemic control.

Q: For Grommet tube insertion in serous otitis media, where is the incision on the tympanic membrane typically made?

Anteroinferior quadrant. **Explanation:** The preferred site for **Myringotomy** and **Grommet (Ventilation Tube) insertion** in Serous Otitis Media is the **Anteroinferior quadrant** of the tympanic membrane. **1. Why Anteroinferior is Correct:** * **Safety:** This quadrant is the farthest from vital middle ear structures. It avoids injury to the Ossicular chain (specifically the Incudostapedial joint) and the Chorda Tympani nerve. * **Eustachian Tube Alignment:** It lies directly opposite the opening of the Eustachian tube, facilitating better ventilation. * **Extrusion Rate:** Tubes placed anteriorly tend to stay in place longer than those placed posteriorly, as the migratory pattern of the tympanic membrane epithelium helps prevent premature extrusion. **2. Why Other Options are Incorrect:** * **Posterosuperior Quadrant:** This is the "Danger Zone." Incisions here risk damaging the **Incudostapedial joint**, the **Stapes**, and the **Chorda Tympani nerve**. * **Anterosuperior Quadrant:** This area is technically difficult to access due to the overhang of the anterior canal wall and is close to the Eustachian tube orifice, which may lead to early blockage of the tube by secretions. * **Posteroinferior Quadrant:** While sometimes used for simple myringotomy (to drain pus in ASOM), it is not preferred for Grommets because the proximity to the Round Window and the higher risk of early extrusion compared to the anterior quadrants. **Clinical Pearls for NEET-PG:** * **Indication:** Grommets are most commonly used for **Otitis Media with Effusion (Glue Ear)** non-responsive to medical management for 3 months. * **Myringotomy Technique:** In ASOM, a circumferential incision is made; in Serous Otitis Media, a radial incision is preferred to minimize scarring. * **Complication:** The most common long-term complication of Grommet insertion is **Tympanosclerosis** (chalky white patches on the TM).

Question 1

Loudness recruitment phenomenon is associated with which type of hearing loss?

Accepted Answer

Cochlear hearing loss

Answer

Retrocochlear hearing loss

Answer

Conductive hearing loss

Answer

Sensorineural hearing loss

Question 2

Types of tympanoplasty include all except?

Accepted Answer

Schwartz operation

Answer

Myringoplasty

Answer

Myringostapediopexy

Answer

Fenestration

Question 3

Which of the following is NOT true about otitic barotrauma?

Accepted Answer

Occurs during sudden ascent in aircraft

Answer

Conductive deafness

Answer

Retracted tympanic membrane

Answer

Catheterization can be used

Question 4

Which abscess is related to the sternocleidomastoid muscle?

Accepted Answer

Bezold abscess

Answer

Luc abscess

Answer

Citelli abscess

Answer

Parapharyngeal abscess

Question 5

What is the indication for radical mastoidectomy in a middle-aged female?

Accepted Answer

Cholesteatoma invading the eustachian tube

Answer

Acute suppurative otitis media (ASOM)

Answer

Chronic suppurative otitis media (CSOM)

Answer

Acute mastoiditis

Question 6

A 70-year-old man presents with tinnitus. What is the most probable diagnosis?

Accepted Answer

Acoustic neuroma

Answer

Acute suppurative otitis media (ASOM)

Answer

Labyrinthitis

Answer

Acoustic trauma

Question 7

A 12-year-old child presents with fever, unilateral postauricular pain, and mastoid bulging that displaces the pinna forward and outward, with loss of bony trabeculae. The patient has a history of chronic persistent pus discharge from the same ear. What is the treatment of choice?

Accepted Answer

Mastoidectomy with incision and drainage and antibiotics

Answer

Antibiotics only

Answer

Incision and drainage

Answer

Antibiotics and incision and drainage

Question 8

A diabetic female patient presents with severe ear pain, granulation tissue in the external auditory canal, and facial palsy. What is the most likely diagnosis?

Accepted Answer

Malignant otitis externa

Answer

Herpes zoster otitis

Answer

Otomycosis

Answer

None of the above

Question 9

For Grommet tube insertion in serous otitis media, where is the incision on the tympanic membrane typically made?

Accepted Answer

Anteroinferior quadrant

Answer

Anterosuperior quadrant

Answer

Posterosuperior quadrant

Answer

Posteroinferior quadrant

Question 10

In which quadrant is myringotomy typically performed?

Accepted Answer

Both antero-inferior and posteroinferior quadrants

Answer

Antero-inferior

Answer

Posteroinferior

Answer

None of the above

Otology — MCQs

Otology — MCQs

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