title: [A woman with fatigue and teardrop cells].
abstract: A 56-years-old woman was admitted to the emergency department because of fatigue since 6 weeks. Laboratory investigation revealed pancytopenia with teardrop cells and hypersegmentation. Teardrop cells are a characteristic finding in myelofibrosis, but in this case they were caused by severe vitamin B12 deficiency.
authors.affiliation: Medisch Centrum Alkmaar, afd. Interne Geneeskunde, Alkmaar.
authors.forename: Yvonne H M
authors.initials: YH
authors.lastname: Krul-Poel
authors.forename: Matthijs
authors.initials: M
authors.lastname: Westerman
authors.forename: Frank
authors.initials: F
authors.lastname: Stam
mesh_terms: D004636:Emergency Service, Hospital; D005221:Fatigue / Q000175:diagnosis / Q000209:etiology; D005260:Female; D006760:Hospitalization; D006801:Humans; D008875:Middle Aged; D010198:Pancytopenia / Q000175:diagnosis* / Q000209:etiology; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000175:diagnosis*