## **Core Concept**
Hodgkin's lymphoma, also known as Hodgkin's disease, is a type of lymphoma characterized by the presence of Reed-Sternberg cells. The disease is classified into several subtypes based on histopathological features, including the presence of specific types of cells.

## **Why the Correct Answer is Right**
The correct answer, **nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL)**, is associated with "popcorn cells" due to the characteristic appearance of the lymphocytic and histiocytic (L&H) cells, also known as "popcorn cells" or "lymphocytic and histiocytic" cells. These cells have a distinctive morphology with abundant cytoplasm and a multilobated or "popcorn-like" nucleus. NLPHL is a rare subtype of Hodgkin lymphoma, accounting for about 5% of cases.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Classical Hodgkin lymphoma is characterized by the presence of Reed-Sternberg cells, not popcorn cells. Reed-Sternberg cells are large, often multinucleated, and have a distinctive "owl-eyed" appearance.
- **Option B:** This option might refer to another subtype, but without specifics, it's hard to directly refute. However, given that NLPHL is known for popcorn cells, any other subtype not associated with these cells would be incorrect.
- **Option D:** This option might similarly refer to another subtype of Hodgkin lymphoma. However, the specific association of "popcorn cells" with NLPHL makes any other subtype incorrect.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that **nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) has a more indolent course** compared to classical Hodgkin lymphoma and often presents with lymphadenopathy. The presence of "popcorn cells" is a diagnostic hallmark, helping differentiate NLPHL from other subtypes.

## **Correct Answer:** B. Nodular lymphocyte-predominant Hodgkin lymphoma.