my son has been diagonised as increased vascular prominence in bilateral lung fieldsand widening of superior mediastinum - likely secondary to thymic shadow. what does it mean and what need to be done? bilirubin [total]-1.6mg/dl bilirubin[direct]-0.9mg/dl haemoglobin blood-/dl21.21.8mg/dl rbc-9.07 platelet count-140 lymphocytes-43% haematocrit/pcv-67.2% mcv-74.1fl mch-24pg rdw-27%