14 Other Anemias
Last updated
Last updated
cortex: glomeruli, pericapillary
RF: damaged interstitial cells, nonfunctioning
bone marrow not making
increase mortality
not really anemia but pancytopenia
aplastic anemia: absent development of RBC/WBC/platelets
acellular bone marrow
pancytopenia: many causes, alone not enough diagnosis
Self destruct sand timer: PTU and methimazole can cause agranulocytosis. Risk of infection
Plastic chew bones: PTU and methimazole can cause aplastic anemia
Deflated inner tubes: anemia due to dose related reversible suppression of RBC production
Plastic bone: aplastic anemia
Plastic Bone-shaped balloon: NSAIDs (indomethacin most commonly) can cause aplastic anemia
aplasia not same time
rare, related to aplatic anemia
thymoma: rare tumor of thymus
2 causes: megaloblastic and others
hallmark: hypersegmented neutrophils
learn all from biochem perspective
pernicious anemia from chronic gastritis: B12 deficiency
Blasting fireworks: MTX can cause megaloblastic anemia (due to folate deficiency)
Princess Izolde and dove sigil: Zidovudine (nucleoSIDE RTI)
Devoured marrow: zidovudine may cause myelosuppression
Pale white dress: zidovudine can cause anemia
Multi-lobed sand timer: zidovudine can cause agranulocytosis
Spilled salad: phenytoin can cause folate deficiency → megaloblastic anemia
Empty pan: pancytopenia
Red fireworks: megaloblastic anemia
Diphyllobothrium latum
fish tapeworm: B12 deficiency, Megaloblastic anemia
really just normocytic anemia with lots of reticulocytes
doesn't really happen
Diamond-Blackfan anemia is a congenital erythroid aplasia that presents within the first year of life. Patients classically present with:
Macrocytic anemia
Upper limb malformations (e.g. triphalangeal thumbs)
Craniofacial abnormalities (e.g. flat nasal bridge)
Impaired growth
Diamond-Blackfan anemia is caused by mutations of genes that encode ribosomal proteins (e.g. RPS19). These mutations induce aberrant p53 activity, which results in impaired erythropoiesis.
Hemoglobin electrophoresis of patients with Diamond-Blackfan anemia (DBA) shows elevated hemoglobin F (HbF).