Stippling is seen on
**Core Concept**
Stippling is a histopathological term describing a pattern of small, discrete foci of cellular injury or necrosis, often seen in bone marrow or liver specimens. This phenomenon is associated with various pathologic conditions, including hematological disorders and viral infections.
**Why the Correct Answer is Right**
Stippling is typically seen in the bone marrow of patients with lead poisoning, where it represents aggregated iron deposits within the cytoplasm of erythroblasts. This occurs due to the inhibition of heme synthesis by lead, leading to the accumulation of iron within the mitochondria. The presence of stippling is a hallmark of lead poisoning and can be observed on a peripheral blood smear or bone marrow biopsy.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as stippling is not typically associated with anemia of chronic disease, which is characterized by a normocytic anemia with a decreased serum iron level.
**Option B:** This option is incorrect as stippling is not a feature of hemolytic anemia, which is characterized by the breakdown of red blood cells.
**Option C:** This option is incorrect as stippling is not a characteristic finding in sideroblastic anemia, which is characterized by the presence of ring sideroblasts in the bone marrow.
**Clinical Pearl / High-Yield Fact**
Lead poisoning can present with a wide range of symptoms, including abdominal pain, constipation, and neuropathy, in addition to stippling in the bone marrow. It is essential to consider lead poisoning in the differential diagnosis of patients with unexplained anemia or other systemic symptoms.
**Correct Answer: D. Lead poisoning.**