[Neonatal neuroblastoma and prenatal diagnosis]

Abstract

The improvement of the imaging has considerably increased the number of cases of neuoroblastoma, diagnosed in preborn age. The authors present a case of neonatal neuroblastoma diagnosed in prenatal age and managed with a multidisciplinary approach. The authors report the case of R.T., born from a scheduled Caesarean delivery. The echographic morphological prenatal diagnosis showed an abdominal mass of 3x2 cm located on the upper side of the kidney, which was not apparently involved. Postnatal ultrasound evaluations confirmed that diagnosis. The diagnostic programme included nuclear magnetic resonance and a renogramm with metaiodobenzylguanidine. These exams confirmed the presence of a mass, probably due to a neuroblastoma. Due to the increasing of the mass, the patient underwent surgical excision of the neoplastic mass. The histological examination confirmed the diagnosis of neuroblastoma Stage I without medullary involvement. During the operation, a medullary biopsy was performed. The FISH exam did not show the amplification of N-myc or a delection of p36 chromosome. For patients younger than 18 months there is no therapeutic gold standard for the treatment of suprarenal masses of neoplastic origin, and the approach is still controversial. The complete excision of the mass should be taken in consideration in presence of an increasing neoformation, and should not include any chemotherapeutical or radiation therapy for stage I, II, IVs (INSS) or L1, MS (INGRSS) neoformations. In conclusion, the effectiveness of a multidisciplinary approach of neonatal neuroblastoma is higher in the early diagnosis and in an accurate staging of the disease, which is fundamental for the favourable prognosis.