Hemophilia C: A Case Report With Updates on Diagnosis and Management of a Rare Bleeding Disorder

Thejus Jayakrishnan, Deep Shah, Prerna Mewawalla



Hemophilia C or factor XI deficiency is a rare clotting disorder with prevalence of only 1 per 1 million. A 24-year-old male with multiple abdominal surgeries complicated by wound infections and poor healing was admitted to plastic surgery service for an elective abdominoplasty. Hematology was consulted for increased intraoperative and postoperative bleeding. Laboratory workup showed high-normal activated plasma thromboplastin time of 31 s (reference: 23 - 34 s), prothrombin time (PT) of 15 s (reference: 11.8 - 14.3 s) and internationalized normal ratio (INR) of 1.2. Patient had normal factors VIII, IX, XIII levels and normal von Willebrand’s factor level. The factor XI level came back at 0.28 (0.44 - 1.43 U/mL) diagnostic for intermediate factor XI deficiency. Factor XI is responsible for thrombin generation after clotting is initiated as well as clot stabilization. The confirmatory test is factor XI assay. The management of factor-XI deficiency is based on history of bleeding and nature of the procedure.

J Hematol. 2019;8(3):144-147
doi: https://doi.org/10.14740/jh522



Factor XI deficiency; Hemophilia; Coagulation cascade; Coagulopathy; Clotting disorders

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Journal of Hematology, quarterly, ISSN 1927-1212 (print), 1927-1220 (online), published by Elmer Press Inc.                   
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