Iron deficiency anemia (IDA) is the most common anemia worldwide. It results from insufficient iron for hemoglobin synthesis, leading to microcytic, hypochromic red cells. Key features include low serum iron, low ferritin, elevated TIBC, and a characteristic peripheral smear with small pale RBCs.

Robbins Pathologic Basis of Disease has the most comprehensive section. Let me read both Robbins texts in parallel.

Excellent content. Now let me read the rest of Robbins Pathologic Basis of Disease (the larger section) for morphology, lab findings, and clinical features, and also check for relevant images.

I have rich content now. Let me also read the full Robbins Pathologic Basis section for morphology and fetch key images (the peripheral smear and iron metabolism diagrams).