## **Core Concept**
Primary tuberculosis typically presents with specific radiological and pathological features. It usually involves the lung periphery or the middle and lower lobes and is characterized by the formation of a Ghon's complex, which includes a primary focus in the lung and associated lymphadenopathy.

## **Why the Correct Answer is Right**
The correct answer, option , is associated with features not commonly seen in primary tuberculosis. In primary tuberculosis, one might see a Ghon's complex (which includes the primary lung lesion and lymph node involvement), a tuberculous cavity is more typical of post-primary tuberculosis.

## **Why Each Wrong Option is Incorrect**
* **Option A:** can be seen in primary tuberculosis as part of the Ghon's complex.
* **Option B:** may also be observed, reflecting the body's immune response.
* **Option C:** can occur, particularly in children and immunocompromised individuals.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that primary tuberculosis often presents with minimal symptoms and can be detected incidentally on a chest X-ray showing a Ghon's complex or isolated lymphadenopathy.

## **Correct Answer: .**