Hi All, My son feeling some lymph nodes in neck, we went to the ENT doctor, they refered to Neck ultrasound, we have received report stating that : There are small volume bilateral cervical lymph nodes with preserved fatty hilum in level II, III, and V, largest measuring 17 x 6.4 mm in right level II and 16 x 5.6 mm in left level II. My concern on the Lymph node size , how to understand the Lymph node size. is it multiple 17 x 6.4 mm  = 108.8  or largest lymph node size 17mm and smallest  lymph node size is 6.4mm