Resumen

FUENMAYOR MEZA, Carmen Elena; GARCIA RUIZ, Maryori  y  MARIN, Carlos. Lactante con masa abdominal teratoma renal vs. Nefroblastoma teratoide. Rev. venez. oncol. [online]. 2008, vol.20, n.4, pp.201-204. ISSN 0798-0582.

OBJECTIVE: Very rarely teratomas and tumors derived from germ cell can arise within the kidney. Extragonadal teratomas are most frequent in the mediastinum and sacrococcygeal region. METHOD: In the University Hospital of The Andes Mérida, Venezuela was treated a three month old female infant with an abdominal mass. The X-ray films and the ultrasound study showed a big retroperitoneal tumor of left kidney and it was heterogeneous and had amorphous calcifications. RESULTS: In the surgery procedure, a multicystic tumor within the kidney parenchyma was found; the light was occupied with clear yellow liquid and fat, sebaceous and mucinous materials, hair, and blood. A cyst was involved with mature cells type stratificated with calcification queratine and epithelium mono-estratificated, ciliate respiratory, cartilage and sebaceous tissues. CONCLUSIONS: The teratoma renal is an uncommon neoplasm with a benign clinical course and a good prognosis. The differential diagnosis should be with some neoplasm retroperitoneal benign and malignant. During the infancy the histopathologic differential diagnosis with teratoid nephroblastoma is a mandatory. Surgery procedure should thus be the first choice for treatment. Ten years later, the evolution of the patient motive of studied in these work was satisfactory, actually she has no evidence of any tumor recurrence.

Palabras clave : Abdominal; mass; renal; teratoma; germ cell tumor.