**Core Concept**
Attico antral disease, also known as chronic maxillary sinusitis, is a common condition characterized by inflammation of the maxillary sinus and its surrounding structures. This condition often results from chronic infection, allergic reactions, or anatomical abnormalities.

**Why the Correct Answer is Right**
The treatment of attico antral disease typically involves a combination of medical and surgical interventions. The correct answer is **Functional Endoscopic Sinus Surgery (FESS)**. FESS is a minimally invasive surgical procedure that involves the use of an endoscope to visualize and remove blockages and infected tissue within the sinuses. This procedure is effective in relieving symptoms and improving sinus function by restoring normal drainage and ventilation.

**Why Each Wrong Option is Incorrect**
**Option A:** Antibiotics are often used to treat acute exacerbations of attico antral disease, but they are not the primary treatment for chronic disease. Chronic antibiotics may lead to antibiotic resistance and do not address the underlying anatomical issues.

**Option B:** Corticosteroids can be used to reduce inflammation and swelling in the sinuses, but they are not a definitive treatment for attico antral disease. Topical steroids may provide symptom relief but do not address the underlying anatomical abnormalities.

**Option C:** Caldwell-Luc procedure is an older, more invasive surgical technique that involves opening the maxillary sinus through the anterior wall. While it can be used to treat attico antral disease, it is generally reserved for more complex cases and is associated with higher complication rates compared to FESS.

**Clinical Pearl / High-Yield Fact**
FESS is often considered the gold standard treatment for attico antral disease due to its minimally invasive nature, low complication rates, and high success rates in relieving symptoms and improving sinus function.

**Correct Answer: D. Functional Endoscopic Sinus Surgery (FESS)**