We present the case of a male 2-year-old patient who underwent surgery for a 13-cm-long liver teratoma that caused elongation of the common hepatic duct and the portal vein. The boy had an abdominal mass and abdominal distension with pain of mild intensity. Abdominal computed tomography and abdominal nuclear magnetic resonance reported a predominantly cystic expansive liver lesion with some internal solid components. The case was evaluated and surgical intervention was decided, performing a right hepatectomy and biliodigestive derivation due to elongation and compromise of the common bile duct. Primary mature liver teratoma is a rare tumor in population with a higher incidence in children, so it should be suspected in all patients with solid liver tumors that do not present with high AFP values.

Oblitas C. Complicaciones quirúrgicas en pacientes pediátricos con apendicitis aguda complicada en cirugías abiertas y laparoscópica en un centro de referencia nacional.

Congenital mesoblastic nephroma (CMN) is the most frequent renal tumor in newborns and infants. under 3 months. The clinical case of a patient younger than 3 months, with prenatal diagnosis, referred in a timely manner for evaluation and management by the Institution is presented. CMN is a low incidence tumor. Early diagnosis as well as complete excision of the tumor are predictors of good prognosis, as in the case of our patient.