CLL is characterised by following except –
**Core Concept**
Chronic Lymphocytic Leukemia (CLL) is a type of cancer that affects the blood and bone marrow, characterized by the production of an excessive number of immature white blood cells. It is marked by the accumulation of mature, but functionally incompetent, lymphocytes in the bone marrow, lymphoid organs, and peripheral blood.
**Why the Correct Answer is Right**
Since the actual options are missing, let's discuss a general approach to CLL characteristics. CLL is typically characterized by an increase in lymphocyte count, presence of specific surface antigens like **CD5** and **CD23**, and certain genetic mutations.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option, we can't determine its correctness, but typically, incorrect options might include characteristics of other leukemias or lymphomas.
**Option B:** Similarly, without the option, it's hard to comment, but it might be a feature not commonly associated with CLL, such as the presence of the **Philadelphia chromosome**, which is more characteristic of Chronic Myeloid Leukemia (CML).
**Option C:** This could potentially be a feature that is not exclusively characteristic of CLL or might be a characteristic of a different condition altogether.
**Option D:** Again, without the specific option, it's challenging to provide a detailed explanation.
**Clinical Pearl / High-Yield Fact**
A key point to remember about CLL is its immunophenotypic profile, which typically includes **CD5** and **CD23** positivity, distinguishing it from other lymphoproliferative disorders.
**Correct Answer:** Correct Answer: D. Not enough information to provide the answer text.