First case of delayed traumatic intracerebral hemorrhage in a patient with undiagnosed factor XI deficiency: diagnosis and management review.

Factor XI (FXI) deficiency, also known as hemophilia C, is included in the rare bleeding disorders (RBDs). It is distinct from other coagulation factor deficiencies because it rarely presents as spontaneous hemorrhage, but rather as bleeding after trauma or surgery; in addition, the severity of bleeding does not correlate with FXI levels. Most delayed traumatic intracerebral hemorrhage (DTICH) occurs during the first 72 hours of the trauma. Factors that contribute to its formation include local or systemic coagulopathy, among others. Hemorrhagic cases of FXI deficiency related to the central nervous system (CNS) are very rare, with only 13 reported cases. To the best of our knowledge, this is the first reported case of a DTICH in a patient with undiagnosed FXI deficiency.