There is a predominantly cystic mass lesion with thin septa noted extending from left axillary region, left side anterior - lateral chest wall of fetus, reaching up to proximal arm and upper left quadrant of abdomen. Anterior margin is in midline. Posterior margin is in left mid - posterior axillary line. Mass appears to be subcutaenous. No calcification is noted. It approximately measures 64 x 58 x 48 mm.