Combined dys-form of homozygous factor XI deficiency and heterozygous factor XII deficiency. 1985

P Hellstern, and C Mannhalter, and M Köhler, and R Kiehl, and G von Blohn, and E Wenzel, and E Deutsch

A 12-year-old girl with lifelong hemorrhagic episodes was found to have both a dys-form of homozygous factor XI deficiency and heterozygous factor XII deficiency. The heredity of the coagulation defects was confirmed by family studies. Severe bleeding after dental surgery occurred in spite of replacement therapy and local measures including fibrin glue. Our findings suggest that the risk of bleeding in patients with homozygous factor XI deficiency must not be underestimated and that the most effective measure is the transfusion of sufficient amounts of fresh frozen plasma until at least the 5th postoperative day.

UI MeSH Term Description Entries
D001803 Blood Transfusion The introduction of whole blood or blood component directly into the blood stream. (Dorland, 27th ed) Blood Transfusions,Transfusion, Blood,Transfusions, Blood
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D005173 Factor XI Deficiency A hereditary deficiency of blood coagulation factor XI (also known as plasma thromboplastin antecedent or PTA or antihemophilic factor C) resulting in a systemic blood-clotting defect called hemophilia C or Rosenthal's syndrome, that may resemble classical hemophilia. Hemophilia C,Rosenthal Syndrome,Deficiency, Factor 11,Deficiency, Factor Eleven,Deficiency, Factor XI,Factor 11 Deficiency,Factor Eleven Deficiency,Plasma Thromboplastin Antecedent Deficiency,Rosenthal's Syndrome,Deficiencies, Factor 11,Deficiencies, Factor Eleven,Deficiencies, Factor XI,Factor 11 Deficiencies,Factor Eleven Deficiencies,Factor XI Deficiencies,Rosenthal Syndromes,Rosenthal's Syndromes,Rosenthals Syndrome,Syndrome, Rosenthal,Syndrome, Rosenthal's
D005175 Factor XII Deficiency An absence or reduced level of blood coagulation factor XII. It normally occurs in the absence of patient or family history of hemorrhagic disorders and is marked by prolonged clotting time. Hageman Trait,Coagulation Factor 12 Deficiency,Deficiency, Factor 12,Deficiency, Factor Twelve,Deficiency, Factor XII,Factor 12 Deficiency,Factor Twelve Deficiency,Hageman Factor Deficiency,Deficiencies, Factor 12,Deficiencies, Factor Twelve,Deficiencies, Factor XII,Deficiency, Hageman Factor,Factor 12 Deficiencies,Factor 12 Deficiency,Factor Deficiency, Hageman,Factor Twelve Deficiencies,Factor XII Deficiencies
D005260 Female Females
D006470 Hemorrhage Bleeding or escape of blood from a vessel. Bleeding,Hemorrhages
D006579 Heterozygote An individual having different alleles at one or more loci regarding a specific character. Carriers, Genetic,Genetic Carriers,Carrier, Genetic,Genetic Carrier,Heterozygotes
D006720 Homozygote An individual in which both alleles at a given locus are identical. Homozygotes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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