Cavernous Transformation of Portal Vein： Etiology, Diagnosis, Management and Prognosis

To observe the etiology, diagnosis, management and prognosis of cavernous transformation of portal vein. We perform Montelukast (10mg, q.d., p.o.) fot the treatment of symptomatic cavernous transformation of portal vein and to observe the efficacy such as the decrease of the volume of ascites and hydrothorax.