HP and macrocytic anemia: Laboratory evaluation revealed severe macrocytic anemia (hemoglobin 3.5 g/dL, mean corpuscular volume (MCV) 136.9 fL) with thrombocytopenia, elevated lactate dehydrogenase (LDH) (2905 U/L), indirect hyperbilirubinemia, and suppressed haptoglobin, findings suggestive of hemolysis.