ENT · Chronic Rhinosinusitis

Nasal Polyps

USMLE2PANCE
7

Bets

The facts most likely to be tested

1

Nasal polyps are pale, edematous, boggy masses typically arising from the ethmoid sinuses.

Confidence:
2

The classic triad of Samter’s Triad consists of nasal polyps, asthma, and aspirin-exacerbated respiratory disease (AERD).

Confidence:
3

Patients with nasal polyps and a history of recurrent respiratory infections or failure to thrive must be screened for cystic fibrosis.

Confidence:
4

Intranasal corticosteroids are the first-line medical therapy for reducing polyp size and improving symptoms.

Confidence:
5

Physical examination reveals non-tender, mobile, gray-colored masses that do not bleed upon probing.

Confidence:
6

Chronic inflammation is the primary underlying pathophysiology, often associated with allergic rhinitis or chronic rhinosinusitis.

Confidence:
7

Surgical polypectomy is indicated for patients who remain refractory to medical management or have significant nasal airway obstruction.

Confidence:

Vignette unlocked

A 34-year-old male with a history of asthma presents to the clinic complaining of chronic nasal congestion and a decreased sense of smell. He reports that his symptoms worsen significantly after taking aspirin for headaches. Physical examination reveals multiple pale, boggy, non-tender masses obstructing the nasal passages bilaterally. The patient has no history of epistaxis or unilateral facial pain.

Which of the following is the most likely underlying diagnosis for this patient's condition?

+Reveal answer

Aspirin-exacerbated respiratory disease (AERD)

The patient presents with the classic Samter's Triad (nasal polyps, asthma, and aspirin sensitivity), which is a high-yield association for nasal polyps.

Mo

Depth

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High yield triage

Etiology / Epidemiology

Associated with chronic rhinosinusitis, Samter's triad, and cystic fibrosis in children.

Clinical Manifestations

Presents with chronic nasal obstruction and anosmia; polyps appear as pale, edematous, boggy masses.

Diagnosis

Diagnosis is clinical, but nasal endoscopy is the gold standard to visualize extent.

Treatment

Intranasal corticosteroids are first-line; avoid aspirin in patients with Samter's triad.

Prognosis

High recurrence rate; surgical removal is reserved for refractory cases.

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Epidemiology & Etiology

Common in adults with chronic rhinosinusitis and allergic rhinitis. If a child presents with nasal polyps, you must rule out cystic fibrosis via sweat chloride test. They are frequently associated with Samter's triad (aspirin-exacerbated respiratory disease).

Pertinent Anatomy

Polyps typically originate from the ethmoid sinuses and protrude into the nasal cavity. They are pedunculated, smooth, and pale masses that do not bleed easily upon probing.

Pathophysiology

Chronic inflammation leads to mucosal edema and prolapse of the sinus lining. The process is driven by eosinophilic infiltration and cytokine release. This results in the characteristic boggy appearance of the nasal mucosa.

Clinical Manifestations

Patients report nasal congestion, mouth breathing, and anosmia (loss of smell). Physical exam reveals pale, gray, glistening masses in the nasal cavity. Red flag: Unilateral polyps in an adult require biopsy to rule out nasopharyngeal carcinoma or inverted papilloma.

Diagnosis

Diagnosis is primarily clinical based on history and physical exam. Nasal endoscopy is the gold standard for visualization. CT scan of the sinuses is indicated if surgery is planned or to assess the extent of disease.

Treatment

Intranasal corticosteroids (e.g., fluticasone) are the first-line treatment to reduce polyp size. Short courses of oral prednisone may be used for severe obstruction. Contraindication: Patients with Samter's triad must avoid aspirin and NSAIDs due to risk of bronchospasm.

Prognosis

Polyps have a high recurrence rate even after surgical polypectomy. Long-term management with topical steroids is required to maintain patency. Asthma exacerbations are common in patients with comorbid Samter's triad.

Differential Diagnosis

Allergic rhinitis: Mucosa is pale/bluish but not mass-like

Inverted papilloma: Unilateral, friable, and prone to bleeding

Nasopharyngeal carcinoma: Unilateral mass with associated cervical lymphadenopathy

Foreign body: Typically unilateral and seen in pediatric patients

Septal deviation: Structural obstruction without mucosal masses