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  • Title: Budd-Chiari syndrome and portal vein thrombosis associated with myeloproliferative disorders: diagnosis and management.
    Author: Brière JB.
    Journal: Semin Thromb Hemost; 2006 Apr; 32(3):208-18. PubMed ID: 16673275.
    Abstract:
    The improvement observed in the prognosis of Budd-Chiari syndrome (BCS) since 1985 may be related to a better identification of underlying prothrombotic states. In a recent investigation of the currently identified prothrombotic disorders, one or several prothrombotic disorders were evidenced in 72% of patients with portal vein thrombosis (PVT) and 87% of patients with hepatic vein thrombosis. According to the different criteria used for their diagnosis, myeloproliferative disorders (MPDs) were reported in 25 to 65% of patients with splanchnic vein thrombosis (STV). In a single-center retrospective study of 128 patients with STV, clusters of abnormal megakaryocytes in bone marrow biopsy combined with endogenous erythrocyte colony formation were used as reference standards for a diagnosis of MPD. These two criteria allowed the diagnosis of MPDs at risk of aggravation in 25% (26 of 103) of patients with STV (41% in BCS; 23% in PVT). After a mean follow-up of 6.09 +/- 6.6 years, hematologic progression was confirmed in 23% of patients with the two criteria both positive, whereas neither progression nor features suggestive of MPD were observed in patients with the same concordant negative criteria. The combination of marked splenomegaly and platelet count > 200 x 10 (9)/L that was never observed in patients without MPD, constitutes a simple index for the suspicion of an underlying MPD, but the absence of an obvious splenic enlargement and normal or decreased platelet numbers may even be observed in patients with MPD-associated STV. In the absence of reliable indicators of the exact expansion of the myeloproliferative clone, the therapeutic management of STV-associated MPD is difficult to standardize. Owing to the suspected incidence on the prognosis of BCS of an associated MPD, the present watchful-waiting attitude proposed in MPD without obvious hematologic expression may be challenged.
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