ABSTRACT
Although soft-tissue sarcomas are rare in the newborn period, this possibility must be borne in mind when a nodule or mass is encountered in an infant.1-4 The usual presentation is with a mass, or with a complication such as bleeding or obstruction of a hollow organ or an orifice. A thorough assessment for evidence of local or distant spread is made by physical examination and appropriate imaging studies, notably ultrasound scanning computed tomography (CT) and magnetic resonance imaging (MRI). Bone marrow aspiration and trephine may also be indicated. The diagnosis is confirmed by tissue biopsy. There are no tumor markers for soft-tissue sarcoma.
