[Malignant tumor (sarcoma) on a fetal neck, diagnosed during pregnancy by means of ultrasonics].

Authors present a case of congenital sarcoma discovered by ultrasound at 30 weeks of pregnancy. The tumour was shown projecting from the anterior neck, well limited and measured 12 X 12 X 8 cm associated with maternal hydramnios. Pregnancy was terminated. Patho-histological finding was a spindle cell sarcoma of the neck and mandibular region. Discussion is about clinical, ultrasound-diagnostic and morphological aspect of this rare entity.