Diseases of the Nose and Paranasal Sinuses Practice Questions

Q: Which of the following is a specific risk factor for the development of adenocarcinoma of the ethmoid sinus?

Wood workers. **Explanation:** The correct answer is **D. Wood workers**. **Why Wood Workers?** Adenocarcinoma of the ethmoid sinus is a rare malignancy with a strong occupational association. Exposure to **hardwood dust** (such as beech and oak) is the most significant risk factor. The fine dust particles are inhaled and tend to deposit in the narrow ethmoid air cells. Over a long latent period (often 20–40 years), these particles induce chronic inflammation and metaplastic changes, specifically leading to the **intestinal type of adenocarcinoma**. **Analysis of Incorrect Options:** * **A. Smoking:** While smoking is a major risk factor for squamous cell carcinoma of the upper aerodigestive tract (larynx, oral cavity), it is not specifically linked to ethmoid adenocarcinoma. * **B. Nickel industry worker:** Nickel exposure is a well-known risk factor for **Squamous Cell Carcinoma** of the nasal cavity and sinuses, rather than adenocarcinoma. * **C. Mustard gas exposure:** This is historically associated with an increased risk of **Squamous Cell Carcinoma** of the larynx and respiratory tract, but not specifically ethmoid adenocarcinoma. **High-Yield Clinical Pearls for NEET-PG:** * **Wood dust = Adenocarcinoma** (specifically the Ethmoid sinus). * **Nickel/Leather/Isopropyl alcohol = Squamous Cell Carcinoma** (specifically the Maxillary sinus). * **Most common site** for Sinonasal Malignancy: Maxillary Sinus (80%), followed by Ethmoid Sinus. * **Most common histological type** of Sinonasal Malignancy: Squamous Cell Carcinoma. * **Inverting Papilloma:** Often associated with HPV; has a high recurrence rate and a 10% risk of malignant transformation into SCC.

Q: Surgical ciliated cyst is often associated with surgeries of which structure or procedure?

Caldwell-Luc procedure. **Explanation:** The **Surgical Ciliated Cyst** (also known as a Postoperative Maxillary Cyst) is a delayed complication occurring years after surgery involving the maxillary sinus. **1. Why Caldwell-Luc is correct:** The Caldwell-Luc procedure involves creating an opening in the canine fossa to access the maxillary sinus. During this process, or during the subsequent curettage of the sinus mucosa, fragments of the **ciliated columnar epithelium** can become trapped or implanted within the surgical closure site or the maxillary bone. Over time (often 10–20 years later), these trapped epithelial remnants proliferate and undergo cystic expansion, leading to a mucus-filled cyst lined with respiratory epithelium. **2. Why other options are incorrect:** * **Maxillary impaction / Mandibular set back:** These are orthognathic surgical procedures. While they involve the facial skeleton, they do not typically involve the intentional entry and mucosal manipulation of the maxillary sinus required to transplant respiratory epithelium into the bone. * **Mucocele:** A mucocele is a clinical entity itself (a mucus-filled sac caused by ductal obstruction), not a surgical procedure. While a surgical ciliated cyst is technically a type of "iatrogenic mucocele," it is specifically the *result* of the Caldwell-Luc procedure. **High-Yield Clinical Pearls for NEET-PG:** * **Latency:** It typically presents **10 to 20 years** after the initial surgery. * **Radiology:** Appears as a well-defined, unilocular radiolucency in the maxilla, often mistaken for a radicular cyst or odontogenic lesion. * **Histology:** Characteristically lined by **pseudostratified ciliated columnar epithelium** (respiratory lining) with goblet cells. * **Treatment:** Complete surgical enucleation.

Q: Walsham's forceps are used to:

Reduce nasal bone fractures. **Explanation:** **Walsham’s Forceps** are specialized instruments used in the management of **nasal bone fractures**. The primary objective of using these forceps is to manipulate and realign the fractured nasal bones (reduction). The instrument features two blades: one is covered with a rubber sleeve to protect the skin (external), while the other is curved and thin to be inserted into the nasal cavity (internal). Unlike Asch’s forceps, the blades of Walsham’s forceps do not meet when the handles are closed, allowing them to grasp the nasal bone without crushing it. This allows the surgeon to "disimpact" and reposition the fractured fragments into their anatomical alignment. **Analysis of Incorrect Options:** * **A & B (Remove teeth/root):** Dental extraction requires forceps with specific beaks designed to grip the crown or root of a tooth (e.g., Upper Universal or Lower Molar forceps). Walsham’s forceps are too long and lack the necessary grip for dental procedures. * **C (Clamp blood vessels):** Hemostasis is achieved using hemostatic forceps (Artery forceps/Mosquito forceps), which have serrated jaws and a ratcheted locking mechanism to occlude vessels. Walsham’s forceps are non-ratcheted and too bulky for this purpose. **High-Yield Clinical Pearls for NEET-PG:** * **Walsham’s vs. Asch’s Forceps:** Walsham’s is used to reduce **nasal bone** fractures (lateral displacement), while **Asch’s forceps** are primarily used to straighten a deviated or fractured **nasal septum**. * **Timing of Reduction:** In adults, nasal fractures should be reduced within 7–14 days before malunion occurs. In children, this should be done within 5–7 days due to rapid healing. * **Protection:** Always remember that the **padded/rubber-covered blade** of Walsham’s forceps goes on the **outside** to prevent skin necrosis or bruising.

Q: Little's area is situated in the nasal cavity in which region?

Anteroinferior. **Explanation:** **Little’s Area** (also known as Kiesselbach's plexus) is a highly vascularized region located in the **anteroinferior** part of the nasal septum. It is the most common site for epistaxis (nosebleeds), accounting for approximately 90% of cases. 1. **Why Anteroinferior is Correct:** This region sits just inside the nasal vestibule on the septal cartilage. It is the site of an arterial anastomosis involving four (sometimes five) arteries: the **Greater Palatine**, **Sphenopalatine**, **Superior Labial**, and **Anterior Ethmoidal** arteries. Its superficial location and exposure to inspired air make it prone to drying and trauma (e.g., nose picking). 2. **Why Other Options are Incorrect:** * **Anterosuperior:** This area is primarily supplied by the ethmoidal arteries but does not contain the confluence of vessels known as Little's area. * **Posterosuperior/Posteroinferior:** These regions correspond to the territory of **Woodruff’s Plexus**, located over the posterior end of the middle turbinate. Bleeding from here is "Posterior Epistaxis," which is more common in elderly or hypertensive patients and is harder to control. **High-Yield Clinical Pearls for NEET-PG:** * **Vessels of Kiesselbach’s Plexus:** Remember the mnemonic **"G-S-S-A"** (Greater palatine, Sphenopalatine, Superior labial, Anterior ethmoidal). Note: The *Posterior Ethmoidal* artery is generally **not** part of this plexus. * **Woodruff’s Plexus:** Located posteriorly; the main vessel involved is the **Sphenopalatine artery** (the "Artery of Epistaxis"). * **Management:** Most bleeding from Little’s area can be controlled by **Trott’s method** (pinching the soft part of the nose) or chemical cautery (Silver Nitrate).

Q: Tapir nose is a complication of which of the following conditions?

Rhinoscleroma. **Explanation:** **Rhinoscleroma** is a chronic granulomatous disease caused by **Klebsiella rhinoscleromatis** (Frisch bacillus). The disease typically progresses through three stages: Catarrhal, Proliferative (Granulomatous), and Cicatricial (Fibrotic). The **"Tapir Nose"** appearance occurs during the **proliferative stage**. In this phase, there is significant granulomatous infiltration of the nasal skin, subcutaneous tissues, and the upper lip. This leads to a woody, painless swelling and broadening of the nose, mimicking the snout of a Tapir. **Analysis of Incorrect Options:** * **Atrophic Rhinitis:** Characterized by "roomy" nasal cavities, foul-smelling crusts (ozaena), and atrophy of the turbinates. It does not cause external granulomatous swelling. * **Rhinosporidiosis:** Caused by *Rhinosporidium seeberi*, it typically presents as a leafy, strawberry-like polypoid mass that is highly vascular and bleeds on touch. It does not typically produce the "Tapir nose" deformity. * **Syphilis:** Congenital syphilis is associated with a **"Saddle nose"** deformity (destruction of the nasal bridge/septum), not the hypertrophic Tapir nose. **High-Yield Clinical Pearls for NEET-PG:** * **Microscopy:** Look for **Mikulicz cells** (large foamy macrophages containing bacilli) and **Russell bodies** (eosinophilic hyaline inclusions in plasma cells). * **Drug of Choice:** Streptomycin and Tetracycline are traditionally used; Ciprofloxacin is also effective. * **Biopsy:** This is the definitive diagnostic gold standard. * **Hebra Nose:** Another term sometimes used synonymously with the external deformity of Rhinoscleroma.

Q: In rhinosporidiosis, which of the following statements is true?

Surgery is the primary treatment.. **Explanation:** Rhinosporidiosis is a chronic granulomatous infection caused by **Rhinosporidium seeberi**. Although historically classified as a fungus, it is now known to be an aquatic protistan parasite (Mesomycetozoea). **1. Why Option C is Correct:** The primary treatment for rhinosporidiosis is **wide surgical excision** (usually via endonasal or endoscopic approach) with **cauterization of the base**. Cautery is crucial to prevent recurrence, which is common due to the spillage of endospores during surgery. Medical therapy (like Dapsone) is only an adjunct used to prevent recurrence by arresting the maturation of sporangia. **2. Why Other Options are Incorrect:** * **Option A:** While it forms a granuloma, *R. seeberi* is **not a fungus**. It is a water-borne parasite. This is a common "trap" in exams. * **Option B:** The mass is typically **strawberry-like** (leafy, polypoid, and friable) with a **vascular, reddish/pink appearance**. The surface is studded with tiny white dots, which represent mature sporangia containing endospores. Greyish masses are more characteristic of simple ethmoidal polyps. * **Option D:** Radiotherapy has no role in the management of this infectious/parasitic condition; it is reserved for malignancies. **High-Yield Clinical Pearls for NEET-PG:** * **Epidemiology:** Most common in South India (Tamil Nadu, Kerala) and Sri Lanka; associated with bathing in stagnant pond water. * **Histopathology:** Characterized by large, thick-walled **sporangia** containing thousands of **endospores** (visible on H&E, PAS, or GMS stains). * **Site:** The **nasal septum** and inferior turbinate are the most common sites. * **Transmission:** Transepithelial infection via traumatized epithelium.

Q: A 45-year-old man presents with breathing difficulties and signs of airway obstruction on physical examination. A CT scan reveals a nasal polyp obstructing the airway. Drainage from which of the following structures is also likely to be obstructed?

Maxillary sinus. **Explanation:** The correct answer is **B. Maxillary sinus**. The clinical scenario describes a nasal polyp causing airway obstruction. In clinical practice, the most common type of nasal polyp is the **Antrochoanal polyp**. These polyps originate from the mucosa of the **maxillary sinus** (specifically near the accessory ostium). They grow to fill the maxillary antrum, exit through the natural or accessory ostium into the middle meatus, and then extend posteriorly toward the choana, obstructing the airway. Because the polyp physically occupies the ostium of the maxillary sinus as it exits, it directly leads to the obstruction of drainage from that specific sinus. **Analysis of Incorrect Options:** * **A. Sphenoid sinus:** This sinus drains into the sphenoethmoidal recess, located far posterior and superior to the typical path of an antrochoanal or ethmoidal polyp. * **C. Ethmoidal sinus:** While ethmoidal polyps (multiple/bilateral) originate here, the question implies a single obstructing mass. Even in ethmoidal polyposis, the primary drainage of the maxillary sinus (via the middle meatus) is more frequently compromised by the bulk of the polypoid tissue. * **D. Frontal sinus:** This drains into the frontal recess of the middle meatus. While it can be obstructed by large polyps, the maxillary sinus is the primary site of origin for the classic solitary obstructing polyp (Antrochoanal). **NEET-PG High-Yield Pearls:** * **Antrochoanal Polyp (Killian’s Polyp):** Usually solitary, unilateral, and seen in children/young adults. It has three parts: Antral, Nasal, and Choanal. * **Radiology:** On CT, it appears as a soft tissue mass filling the maxillary sinus and extending into the nasopharynx through the widened ostium (**"Dumbbell shape"**). * **Treatment of Choice:** Functional Endoscopic Sinus Surgery (FESS). Simple polypectomy has a high recurrence rate.

Q: Which is the most commonly involved paranasal sinus in fibrous dysplasia?

Maxillary sinus. **Explanation:** **Fibrous dysplasia** is a benign, non-neoplastic bone disorder where normal bone is replaced by cellular fibrous tissue and disorganized bony trabeculae (classically described as "Chinese letter" or "alphabet soup" patterns on histology). 1. **Why Maxillary Sinus is Correct:** In the craniofacial region, fibrous dysplasia most frequently involves the **maxilla** and the **mandible**. When specifically considering the paranasal sinuses, the **maxillary sinus** is the most commonly affected site. It typically presents as a painless, slow-growing swelling causing facial asymmetry. Radiologically, it shows a characteristic **"ground-glass appearance"** with ill-defined borders that blend into normal bone. 2. **Why Other Options are Incorrect:** * **Ethmoid, Frontal, and Sphenoid Sinuses:** While these sinuses can be involved (especially in the polyostotic form or as an extension of skull base disease), they are statistically less common primary sites compared to the maxilla. The frontal bone is the second most common site in the cranium, but the maxillary sinus remains the top answer for sinus involvement. **Clinical Pearls for NEET-PG:** * **Monostotic vs. Polyostotic:** Monostotic (70%) involves one bone; Polyostotic involves multiple bones. * **McCune-Albright Syndrome:** Polyostotic fibrous dysplasia + Café-au-lait spots (Coast of Maine borders) + Precocious puberty. * **Jaffe-Lichtenstein Syndrome:** Polyostotic fibrous dysplasia + Café-au-lait spots (without endocrine involvement). * **Management:** Observation for asymptomatic cases; surgical "contouring" or debulking after skeletal maturity for cosmetic/functional issues. **Radiotherapy is contraindicated** as it increases the risk of malignant transformation to osteosarcoma.

Q: What is the most common site of carcinoma of the paranasal sinuses?

Maxillary. **Explanation:** The **Maxillary sinus** is the most common site for malignancies of the paranasal sinuses, accounting for approximately **80% of all cases**. Among these, **Squamous Cell Carcinoma (SCC)** is the most frequent histological subtype (about 80%), followed by adenoid cystic carcinoma and adenocarcinoma. * **Why Maxillary is Correct:** Due to its large surface area and constant exposure to inhaled carcinogens and chronic inflammatory stimuli, the maxillary antrum is the primary site for sinus neoplasia. Most patients present in advanced stages (T3 or T4) because the sinus is a "silent" cavity where tumors can grow significantly before causing obstructive symptoms or facial swelling. * **Why others are Incorrect:** * **Ethmoid Sinus:** This is the second most common site (approx. 15-20%). Notably, **Adenocarcinoma** of the ethmoid sinus is strongly associated with occupational exposure to **wood dust**. * **Frontal and Sphenoid Sinuses:** These are extremely rare sites for primary carcinoma, each accounting for less than 1-2% of cases. **High-Yield Clinical Pearls for NEET-PG:** 1. **Ohngren’s Line:** An imaginary line connecting the medial canthus of the eye to the angle of the mandible. Tumors situated **posterosuperior** to this line have a poorer prognosis due to early involvement of the orbit, ethmoids, and infratemporal fossa. 2. **Dutton's/Lederman’s Classification:** Uses two horizontal lines (passing through the floor of the orbit and floor of the antrum) to divide the area into infrastructure, mesostructure, and suprastructure. 3. **Risk Factors:** Exposure to nickel, isopropyl alcohol, and thorium dioxide (Thorotrast) are linked to maxillary SCC.

Question 1

What is the preferred treatment for a 60-year-old patient with maxillary carcinoma involving the anterolateral part of the maxilla?

Accepted Answer

Radiotherapy followed by total/extended maxillectomy

Answer

Radiotherapy only

Answer

Total/extended maxillectomy followed by radiotherapy

Answer

Total/extended maxillectomy alone

Question 2

Which of the following is a specific risk factor for the development of adenocarcinoma of the ethmoid sinus?

Accepted Answer

Wood workers

Answer

Smoking

Answer

Nickel industry worker

Answer

Mustard gas exposure

Question 3

Surgical ciliated cyst is often associated with surgeries of which structure or procedure?

Accepted Answer

Caldwell-Luc procedure

Answer

Maxillary impaction

Answer

Mandibular set back

Answer

Mucocele

Question 4

Walsham's forceps are used to:

Accepted Answer

Reduce nasal bone fractures

Answer

Remove teeth

Answer

Remove root

Answer

Clamp blood vessels

Question 5

Little's area is situated in the nasal cavity in which region?

Accepted Answer

Anteroinferior

Answer

Anterosuperior

Answer

Posteroinferior

Answer

Posterosuperior

Question 6

Tapir nose is a complication of which of the following conditions?

Accepted Answer

Rhinoscleroma

Answer

Atrophic rhinitis

Answer

Rhinosporidiosis

Answer

Syphilis

Question 7

In rhinosporidiosis, which of the following statements is true?

Accepted Answer

Surgery is the primary treatment.

Answer

It is characterized by a fungal granuloma.

Answer

It presents as a greyish mass.

Answer

Radiotherapy is a treatment modality.

Question 8

A 45-year-old man presents with breathing difficulties and signs of airway obstruction on physical examination. A CT scan reveals a nasal polyp obstructing the airway. Drainage from which of the following structures is also likely to be obstructed?

Accepted Answer

Maxillary sinus

Answer

Sphenoid sinus

Answer

Ethmoidal sinus

Answer

Frontal sinus

Question 9

Which is the most commonly involved paranasal sinus in fibrous dysplasia?

Accepted Answer

Maxillary sinus

Answer

Frontal sinus

Answer

Ethmoid sinus

Answer

Sphenoid sinus

Question 10

What is the most common site of carcinoma of the paranasal sinuses?

Accepted Answer

Maxillary

Answer

Frontal

Answer

Ethmoid

Answer

Sphenoid

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

On this page

Practice by Chapter

Want unlimited practice?