Abstract
The following case report and literature review will emphasize the individualized therapeutic management of a complex prothrombotic pathology. The onset of acute portal vein thrombosis in a patient with atrial fibrillation and good compliance to anticoagulation with a direct oral anticoagulant, who associates significant thrombocytosis, after excluding predisposing inflammations, infections or solid neoplasia, raises the diagnostic suspicion of myeloproliferative disorder, and imposes a complex interdisciplinary approach.