The LE cell in Romanowsky-stained preparation is –
The options aren't provided, but since the correct answer isn't listed, I need to think about what cells are typically seen in such preparations. Romanowsky stains, like Wright's or Giemsa, are used to stain blood smears. In SLE, one of the hallmark findings is the presence of LE cells. But what exactly is an LE cell?
Wait, the LE cell is a neutrophil that has phagocytosed a lupus body (also called a LE body). The lupus body is a homogeneous, eosinophilic material, which is actually nuclear material from a degenerated cell. So, in a blood smear, if you see a neutrophil containing a large, irregular, homogeneous inclusion, that's an LE cell.
So the correct answer should be a neutrophil with an inclusion. The options would likely be different cell types. Let me think: the LE cell is a neutrophil with a phagocytosed lupus body. So if the options are like A. Eosinophil, B. Lymphocyte, C. Neutrophil with inclusion, D. Monocyte, then the correct answer would be C. Neutrophil with inclusion.
Now, why are the other options wrong? Let's go through them. Option A: Eosinophil. Eosinophils are involved in allergic reactions and parasitic infections, not typically associated with LE cells. Option B: Lymphocyte. Lymphocytes are part of the immune response, but the LE cell is a neutrophil. Option D: Monocyte. Monocytes can phagocytose various particles, but the specific term here is a neutrophil with a lupus body.
Clinical pearl: LE cells are a classic finding in SLE, but they are not specific enough for diagnosis now. The presence of anti-nuclear antibodies (ANA) is more commonly used. However, knowing the morphology of LE cells is important for histopathology exams.
Putting this all together, the correct answer is the neutrophil with an inclusion. The explanation should cover the core concept of LE cells in SLE, their structure, why the correct answer is right, and why the other options are incorrect. The clinical pearl should mention that while LE cells are a classic sign, modern diagnostics rely more on ANA testing.
**Core Concept**
The LE (lupus erythematosus) cell is a **neutrophil** that has phagocytosed a **lupus body** (nuclear material from a degenerated cell). It is a classic histopathological finding in **systemic lupus erythematosus (SLE)**, detected in Romanowsky-stained blood smears or tissue sections. This phenomenon reflects immune complex deposition and autoantibody-mediated nuclear damage.
**Why the Correct Answer is Right**
The LE cell