Erlenmeyer flask deformity is associated with which condition?

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Multiple Choice

Erlenmeyer flask deformity is associated with which condition?

Erlenmeyer flask deformity reflects how bone adapts to increased marrow activity. In severe thalassemia, chronic hemolytic anemia drives expanded erythropoiesis, enlarging the red marrow within the long bones. This marrow expansion pushes outward at the distal femoral metaphysis, causing the metaphysis to flare and take on a bottle-like shape seen on X-ray. That distinctive metaphyseal flare is a classic radiographic sign of thalassemia because it directly results from the marrow hyperplasia characteristic of the disease. Other conditions produce different bone changes and don’t typically create this specific flare pattern.

Erlenmeyer flask deformity reflects how bone adapts to increased marrow activity. In severe thalassemia, chronic hemolytic anemia drives expanded erythropoiesis, enlarging the red marrow within the long bones. This marrow expansion pushes outward at the distal femoral metaphysis, causing the metaphysis to flare and take on a bottle-like shape seen on X-ray. That distinctive metaphyseal flare is a classic radiographic sign of thalassemia because it directly results from the marrow hyperplasia characteristic of the disease. Other conditions produce different bone changes and don’t typically create this specific flare pattern.

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