🧬 Chapter 501 · Congenital Dyserythropoietic Anemias (CDA)

Nelson Textbook of Pediatrics 22nd Edition | CDA Types I-IV: ineffective erythropoiesis, binucleate/multinucleate erythroblasts, chromatin bridges. Type II (SEC23B, most common), Type I (CDAN1, Swiss cheese chromatin), Type III (KIF23), iron overload, splenectomy, interferon-α2 for CDA I.

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📋 30 Clinical Scenarios — Congenital Dyserythropoietic Anemias

📇 High‑Yield Review Cards (CDA Types I-IV)

🩺 Clinical Recognition: Congenital Dyserythropoietic Anemias

Select a presentation for diagnostic clues and differentiation.

📋 Stepwise Management of Congenital Dyserythropoietic Anemias

🔑 CDA Type Comparison (Nelson Ch 501)

Type I (CDAN1)

Type II (SEC23B) — Most Common

Macrocytic anemia

Normocytic anemia

Chromatin bridges, 'Swiss cheese' EM

Binucleate (10-35%), double membranes

Dysmorphic features (syndactyly, short stature)

No characteristic dysmorphism

Peg-IFN-α2 may reduce transfusion need

Splenectomy may help

🧬 Chapter 501 · Congenital Dyserythropoietic Anemias (CDA)

📋 30 Clinical Scenarios — Congenital Dyserythropoietic Anemias

📇 High‑Yield Review Cards (CDA Types I-IV)

🩺 Clinical Recognition: Congenital Dyserythropoietic Anemias

📋 Stepwise Management of Congenital Dyserythropoietic Anemias

⚡ Reflex Prompts — Clinical Decisions in CDA

📖 Summary: Congenital Dyserythropoietic Anemias — Nelson Ch 501