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[Factor XII deficiency - Hageman trait. Report of 2 cases]
For the first time in our literature we have described the two cases of hereditary deficiency of factor XII (Hageman trait), a very rare disorder. It was discovered when a long clotting time was found in our patients during the course of a preoperative evaluation. Abnormal thrombelastogram, with a picture typical for hemophilia, gave as a reason to continue with laboratory investigation. The laboratory findings showed us a very low value of factor XII in one case, and total absence of factor XII in the other.
For the first time in our literature we have described the two cases of hereditary deficiency of factor XII (Hageman trait), a very rare disorder. It was discovered when a long clotting time was found in our patients during the course of a preoperative evaluation. Abnormal thrombelastogram, with a picture typical for hemophilia, gave as a reason to continue with laboratory investigation. The laboratory findings showed us a very low value of factor XII in one case, and total absence of factor XII in the other.