[Diffuse mediastinal, retroperitoneal and hepatic neurofibromatosis in 4-year-old child. Value of puncture biopsy guided by computerized tomography].

A case of neurofibromatosis in a 4 year-old girl is reported. Extensive localization to mediastinum, retroperitoneal space and liver is particularly infrequent. Histological diagnosis was obtained through a needle biopsy of the retroperitoneal space and the liver under the control of CT scan X-ray. Prognosis seems to be related to the tracheal compression.