# A bone marrow blast contains a distinct rod-shaped, red-purple cytoplasmic inclusion. This inclusion is most characteristic of which disorder?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=482446  
> language: ko  
> subject: Hematology · 혈액학·지혈

## 문제

A bone marrow blast contains a distinct rod-shaped, red-purple cytoplasmic inclusion. This inclusion is most characteristic of which disorder?

## 보기

1. Acute myeloid leukemia **✔ 정답**
2. Acute lymphoblastic leukemia
3. Chronic lymphocytic leukemia
4. Infectious mononucleosis

**정답: 1**

## 해설

Auer rods are fused azurophilic granules seen in myeloblasts and are diagnostic of acute myeloid leukemia; they are absent in lymphoid malignancies.

## 핵심 개념

- **Auer rod myeloblast acute myeloid leukemia**

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