Prenatal ultrasound diagnosis of congenital infantile fibrosarcoma and congenital hemangioma: Three case reports

Figure 2 Postnatal imaging of the congenital infantile fibrosarcoma in Case 1. A: One-day postnatal two-dimensional ultrasound using a linear array transducer with a frequency of 5-12 MHz, revealing a well-defined mass in the left axilla consisting mainly of isoechoic parenchymal components (*) with a few anechoic areas (white triangle) within the mass. Yellow arrow, the boundary of the mass; B: One-day postnatal pulse Doppler ultrasound revealing a rich blood flow and low resistance blood flow spectrum in the mass; C: Postnatal X-ray of the newborn showed a soft tissue density shadow protruding from the left axilla and lateral chest wall, resulting in compression of the adjacent ribs (blue arrow). White arrow, the mass on X-ray.