FMGE 2025 - ENT Practice Questions

Q: A diabetic male presents with facial pain and blackish discoloration in the nose. The CT image shows bone erosion and sinus involvement. What is the most likely diagnosis?

Rhino-orbital-cerebral mucormycosis. ***Rhino-orbital-cerebral mucormycosis*** - This diagnosis is strongly suggested by the clinical triad of an **immunocompromised state (diabetes)**, the presence of a **black necrotic eschar** in the nose, and imaging evidence of **bone erosion**. - Mucormycosis is an **angioinvasive** fungal infection that causes tissue infarction and necrosis, leading to the characteristic black discoloration and rapid spread through tissues. *Acute bacterial sinusitis* - While it causes facial pain and sinus inflammation, it typically presents with purulent discharge and does not cause a **black necrotic eschar**. - **Bone erosion** is a very rare complication and not a characteristic feature, unlike in invasive fungal disease. *Allergic fungal sinusitis* - This is a **non-invasive** hypersensitivity reaction to fungi and does not cause tissue destruction, necrosis, or bone erosion. - It is characterized by the presence of thick **allergic mucin** containing eosinophils and fungal hyphae within the sinuses, often in atopic individuals. *Nasal polyposis* - This condition involves benign mucosal growths that cause chronic nasal obstruction and anosmia, not acute facial pain or tissue necrosis. - Nasal polyps may remodel bone over time due to pressure, but they do not cause the rapid and destructive **bone erosion** seen in this invasive process.

Q: A tympanometry graph is shown below. An arrow indicates a shallow peak at pressure = 0 daPa. What is the most likely diagnosis based on the tympanometry result shown?

Type As. ***Type As*** - This tympanogram shows a peak pressure within the normal range (around 0 daPa) but with significantly reduced static compliance (a shallow or stiff peak), which is characteristic of a Type As curve. - This finding indicates a stiff middle ear system and is commonly associated with conditions like **otosclerosis**, **tympanosclerosis**, or **ossicular fixation**. *Type A* - A Type A tympanogram represents a **normal** middle ear system, characterized by a sharp peak at normal pressure (around 0 daPa) and normal static compliance (0.3-1.6 mmho). - The graph shown has abnormally **low compliance**, distinguishing it from a normal Type A curve. *Type B* - A Type B tympanogram is a **flat line** with no discernible peak, indicating very poor compliance of the tympanic membrane across all pressures. - This pattern is typically seen with **fluid in the middle ear** (otitis media with effusion) or a tympanic membrane perforation, which is inconsistent with the peaked curve shown. *Type Ad* - A Type Ad tympanogram shows a peak at normal pressure but with **abnormally high compliance** (a deep or hypermobile peak). - This suggests a flaccid tympanic membrane or a discontinuity in the ossicular chain (**ossicular disarticulation**), which is the opposite of the low compliance seen in the provided image.

Q: Identify the abscess type indicated by label 'L' in the provided image.

Luc's abscess. ***Luc's abscess*** - This abscess forms when infection from a **mastoid abscess** spreads **anteriorly** into the **external auditory canal (EAC)**, typically through the fissures of Santorini or a defect in the posterior meatal wall. - Clinically, it presents as a swelling or sagging of the **posterosuperior wall** of the external auditory canal, which can be mistaken for a furuncle. *Citelli's abscess* - This forms when pus from the **mastoid tip** tracks inferiorly along the **posterior belly of the digastric muscle**. - It presents as a deep neck abscess, causing swelling in the **digastric triangle** of the neck. *Bezold's abscess* - This occurs when infection erodes the **mastoid tip** and spreads inferiorly along the sheath of the **sternocleidomastoid muscle**. - It manifests as a tender swelling in the upper part of the neck, deep to the sternocleidomastoid, and can cause **torticollis**. *Post auricular abscess* - Also known as a **subperiosteal abscess**, this forms when infection spreads **laterally** by eroding the mastoid cortex over **MacEwen's triangle**. - It characteristically presents as a tender, fluctuant swelling behind the ear, pushing the **pinna forwards and downwards**.

Q: A 5-year-old child is brought to the outpatient department by his mother with irritability, poor school performance, and a history of recurrent ear infections. Otoscopic examination shows a dull, retracted tympanic membrane with fluid behind it. There is no blood clot present in the ear. What is the most likely diagnosis?

Otitis media with effusion. ***Otitis media with effusion***- This condition is characterized by the presence of **non-purulent fluid (effusion)** in the middle ear space without signs or symptoms of acute infection (such as fever or severe pain).- The otoscopic findings of a **dull, retracted tympanic membrane** with fluid behind it, coupled with symptoms suggesting chronic hearing loss (**poor school performance** and irritability), are classic for OME, or "**glue ear**." *Acute otitis media*- AOM is generally associated with the acute onset of **otalgia** (ear pain) and often fever, along with a key otoscopic finding of a **bulging**, erythematous, and immobile **tympanic membrane**.- The absence of acute inflammatory signs and the description of a retracted, rather than bulging, TM distinguishes this chronic finding from an acute infection. *Otitis externa*- This condition involves inflammation and infection of the **external auditory canal**; the middle ear and the fluid described are not typically affected.- Key clinical findings involve tenderness upon manipulation of the **tragus** or **pinna**, often with swelling and exudate limited to the ear canal. *Cholesteatoma*- Cholesteatoma is a destructive process involving a collection of **squamous epithelium** (a “pearly mass”) that usually causes **foul-smelling chronic otorrhea** due to bone erosion.- While chronic retraction of the TM can lead to its formation, the primary finding here is simply **effusion (fluid)**, not the characteristic highly destructive epidermal mass.

Q: Which of the following subunits is associated with inspiratory stridor?

Supraglottic. ***Supraglottic*** - Obstruction or narrowing in the supraglottic region (above the true vocal cords), such as in **epiglottitis** or **laryngomalacia**, collapses inward during inspiration. - This physiological collapse under negative inspiratory pressure creates characteristic high-pitched airflow limitation known as **inspiratory stridor**. *Glottic* - Lesions affecting the true vocal cords (e.g., bilateral **vocal cord paralysis** or severe webbing) typically cause a relatively fixed obstruction. - Fixed obstruction at the vocal cord level generally results in a **biphasic stridor** (heard equally during both inspiration and expiration). *Subglottic* - Obstruction occurring below the vocal cords at the level of the cricoid cartilage (e.g., **croup** or **subglottic stenosis**). - Since the subglottic area is less compliant than the supraglottic area, it commonly causes a coarse, barking sound and often presents as **biphasic stridor**. *Trachea* - Lower tracheal obstruction may produce a **monophonic wheeze** or sounds related more to expiratory airflow limitation. - High or mid-tracheal lesions, especially if fixed, typically generate a relatively loud **biphasic stridor** rather than purely inspiratory stridor.

Question 1

A diabetic male presents with facial pain and blackish discoloration in the nose. The CT image shows bone erosion and sinus involvement. What is the most likely diagnosis?

Accepted Answer

Rhino-orbital-cerebral mucormycosis

Answer

Acute bacterial sinusitis

Answer

Allergic fungal sinusitis

Answer

Nasal polyposis

Question 2

A tympanometry graph is shown below. An arrow indicates a shallow peak at pressure = 0 daPa. What is the most likely diagnosis based on the tympanometry result shown?

Accepted Answer

Type As

Answer

Type A

Answer

Type B

Answer

Type Ad

Question 3

Identify the abscess type indicated by label 'L' in the provided image.

Accepted Answer

Luc's abscess

Answer

Post auricular abscess

Answer

Bezold's abscess

Answer

Citelli's abscess

Question 4

A 5-year-old child is brought to the outpatient department by his mother with irritability, poor school performance, and a history of recurrent ear infections. Otoscopic examination shows a dull, retracted tympanic membrane with fluid behind it. There is no blood clot present in the ear. What is the most likely diagnosis?

Accepted Answer

Otitis media with effusion

Answer

Acute otitis media

Answer

Otitis externa

Answer

Cholesteatoma

Question 5

Which of the following subunits is associated with inspiratory stridor?

Accepted Answer

Supraglottic

Answer

Glottic

Answer

Trachea

Answer

Subglottic

FMGE 2025 — ENT