Emperipolesis is typical histological finding in
**Core Concept**
Emperipolesis refers to the phenomenon where one cell engulfs or invades another cell, leading to the presence of the engulfed cell within the cytoplasm of the engulfing cell. This histological feature is often associated with certain types of neoplastic cells.
**Why the Correct Answer is Right**
Emperipolesis is a characteristic histological finding in some types of lymphomas, particularly in malignant lymphoma cells. The mechanism behind emperipolesis involves the ability of neoplastic lymphocytes to invade and engulf other cells, including lymphocytes, macrophages, or even epithelial cells. This feature is often observed in lymphomas such as Burkitt lymphoma and follicular lymphoma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as emperipolesis is not a typical feature of chronic lymphocytic leukemia (CLL), which is characterized by a different histological appearance.
**Option B:** This option is incorrect as emperipolesis is not associated with Hodgkin lymphoma, which is characterized by the presence of Reed-Sternberg cells.
**Option C:** This option is incorrect as emperipolesis is not a feature of non-Hodgkin lymphoma in general, which is a broad category of lymphomas that do not include the specific types that typically exhibit emperipolesis.
**Clinical Pearl / High-Yield Fact**
When examining lymphoma tissues, the presence of emperipolesis can be a critical clue in distinguishing between different types of lymphomas, particularly in cases where the diagnosis is unclear.
**Correct Answer:** D.