title: [Coombs-negative autoimmune hemolytic anemia developed after formation of post-operative pseudoaneurysm for femoral neck fracture].
abstract: An 85-year-old woman was admitted to our hospital with severe anemia after nail-plate fixation of the left femoral neck fracture. The patient was diagnosed with Coombs-negative autoimmune hemolytic anemia based on the measurement of red blood cell (RBC)-bound IgG molecules per cell. Pseudoaneurysm of the left profunda femoris artery was detected on magnetic resonance imaging and successfully removed by surgical repair of the artery. Anemia promptly improved, and the number of RBC-bound IgG normalized after the surgery. The destruction of RBCs was thought to have been responsible for temporary induction of anti-RBC autoimmune antibodies.
authors.affiliation: Department of Internal Medicine, Eiju General Hospital.
authors.forename: Masao
authors.initials: M
authors.lastname: Hagihara
authors.forename: Jian
authors.initials: J
authors.lastname: Hua
authors.forename: Morihiro
authors.initials: M
authors.lastname: Inoue
authors.forename: Naohiko
authors.initials: N
authors.lastname: Michikawa
mesh_terms: D000369:Aged, 80 and over; D000744:Anemia, Hemolytic, Autoimmune / Q000175:diagnosis* / Q000209:etiology; D017541:Aneurysm, False / Q000175:diagnosis / Q000601:surgery; D001323:Autoantibodies; D015551:Autoimmunity; D015415:Biomarkers / Q000097:blood; D003298:Coombs Test; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005263:Femoral Artery; D005265:Femoral Neck Fractures / Q000601:surgery*; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D011183:Postoperative Complications
chemical_list: D001323:Autoantibodies; D015415:Biomarkers; D007074:Immunoglobulin G