**Question:** A 20-year-old male presents with nasal obstruction and nasal discharge. Nasal endoscopy shows a large polyp in the right nostril extending into the nasopharynx. His NCCT nose and PNS axial view is given. He should be managed by:

A. Antihistamines
B. Corticosteroids
C. Antibiotics
D. Nasal decongestants

**Core Concept:**

The correct answer is based on understanding the underlying disease process involving nasal polyps. Nasal polyps are non-cancerous, non-infectious, inflammatory growths in the nasal and paranasal sinuses. They occur due to the overproduction of cytokines, such as interleukin-4, interleukin-5, and interleukin-13, which stimulate the growth of eosinophils, mast cells, and goblet cells, leading to mucus hypersecretion and tissue edema. This process is known as the Th2 (helper T cell type 2) pathway, which is a part of the immune response to allergens and infections.

**Why the Correct Answer is Right:**

The correct answer is B: Corticosteroids. Corticosteroids are potent anti-inflammatory agents that suppress the Th2 pathway and reduce the production of cytokines responsible for polyps' growth. By inhibiting the inflammatory response, corticosteroids help shrink the polyps and relieve symptoms like nasal obstruction and discharge.

**Why Each Wrong Option is Incorrect:**

A. Antihistamines (Option A) are used to treat allergic symptoms but do not address the underlying inflammation or shrinkage of polyps. While they may alleviate symptoms temporarily, they do not provide long-term relief.

B. Antihistamines (Option A) and Corticosteroids (Option B) are used in the treatment of nasal polyps. However, since the patient is young and the polyp is large (as shown on the axial NCCT scan), a potent anti-inflammatory agent like corticosteroids would be more effective in reducing polyp size and improving symptoms.

C. Antibiotics (Option C) are prescribed for bacterial infections, which are unlikely in the context of nasal polyps. Since the patient presents with non-infectious symptoms, antibiotics are not the appropriate choice for treatment.

D. Nasal decongestants (Option D) are used to constrict blood vessels, reducing nasal congestion. Nasal polyps are inflammatory lesions, not congestion. Administering decongestants would not address the patient's symptoms or polyp size.

**Clinical Pearls:**

1. Understanding the pathophysiology of nasal polyps, involving the Th2 pathway and inflammation, is crucial for selecting the appropriate therapy.
2. In the context of a large polyp and young age, corticosteroids are more effective in reducing polyp size and managing symptoms compared to antihistamines.