Representative dose distribution and dose volume histogram (DVH) of axillary lymph nodes and ipsilateral lung in both plans. A. Dose distribution in the historical plan at the level of level II lymph node. Orange colored area is initially involved level II lymph node area. Green line shows the area received 96% of the prescribed dose. B. Dose distribution in the modified plan. C. DVH of axillary LNs and ipsilateral lung in the two plans. The dose irradiated to the level II lymph node increased in the modified plan. The dose to level III lymph node in the modified plan was lower than in the historical plan but the doses were more than prescribed dose in both plans. The maximum dose decreased in the modified plan.