Pylephlebitis in pediatrics: A diagnostic challenge.

Pylephlebitis is defined as suppurative thrombosis of the portal vein as a complication of abdominal infections. In pediatrics, the most frequent etiology is appendicitis, generally of late diagnosis, presenting as sepsis, with a high mortality rate. Imaging methods are necessary for diagnosis; the most common are the Doppler ultrasound and computed tomography angiography. Treatment is based on surgery, antibiotic therapy, and anticoagulation. The indication for the latter is controversial, but it may improve prognosis and decrease morbidity and mortality. Here we describe a clinical case of pylephlebitis secondary to Escherichia coli sepsis, which started as acute appendicitis in a pediatric patient who progressed to cavernomatous transformation of the portal vein. It is important to know the management of this disease because, once the initial symptoms are overcome, it will require close follow-up due to a potential progression to liver failure.