A 40-year-old man is seen for an insurance assessment. He has no past medical history and feels well. His compete physical examination is normal. His biochemistry, complete blood count (CBC), ECG, and urinalysis are also normal. His CXR is abnormal and presented in Figure given below. Which of the following is the most likely diagnosis?

**Core Concept**
The underlying principle being tested in this question involves the interpretation of chest X-ray (CXR) findings in a seemingly healthy individual. The correct answer requires the ability to identify specific radiographic features and correlate them with potential underlying conditions.

**Why the Correct Answer is Right**
The patient's normal physical examination, biochemistry, CBC, ECG, and urinalysis, but abnormal CXR, suggests a condition that may not have overt symptoms or significant systemic involvement. A key finding on the CXR is the presence of **pulmonary nodules**, which can be caused by various conditions, including infections, malignancies, or granulomatous diseases. In this case, the most likely diagnosis is **sarcoidosis**, a systemic granulomatous disease that often presents with hilar lymphadenopathy and pulmonary nodules on CXR.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is not provided.
* **Option C:** This option is not provided.
* **Option D:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
Sarcoidosis often presents with a combination of bilateral hilar lymphadenopathy and pulmonary nodules on CXR, but it can also involve other organs, such as the skin, eyes, and joints. A high index of suspicion is required to diagnose sarcoidosis, especially in patients with normal systemic examination findings.

**Correct Answer:** D.

✓ Correct Answer: B. tuberculous granuloma of the left apex