RESUMO
OBJECTIVE: Two cases of cystic neuroblastoma diagnosed by ultrasonography and CT are presented. METHODS/RESULTS: Case 1 was diagnosed by prenatal ultrasonography; case 2 was a palpable abdominal mass that was incidentally detected in a 15-day-old neonate. Both cases showed no analytical abnormalities. The histological analysis demonstrated a localized cystic neuroblastoma. CONCLUSIONS: Cystic neuroblastoma as an atypical form of neuroblastoma in neonates localized in the adrenal gland. It is usually an incidental finding, diagnosed by prenatal ultrasonography or as a palpable abdominal mass. This neoplasm is characterized by its cystic appearance, with no calcification inside and distant metastasis is rare. Prognosis is excellent if diagnosed and treated early. Ultrasonography is the method of choice for the diagnosis of an abdominal mass in neonates.
