<prompt> All of the following are true about accelerated paial breast irradiation APBI exceptAPBI is delivered in an abbreted fashion and a lower total dose than standard course of whole breast radiation.Suitable patients for APBI include women older than or equal to 60 years.Suitable patients for APBI include patients whose tumor Margins negative by atleast 2 mmSuitable patients for APBI include those with multifocal disease.  <response>: Accelerated paial breast irradiation APBI Radiations delivered in an abbreted fashion twice daily for 5 days At a dose lower than the standard course of 5 to 6 weeks of radiation 50 Gray with or without a boost in the case of whole breast irradiation. Suitable patients for APBI: Female 60 years with : Unifocal lesion T1 stage ER-positive No lymphovascular invasion Margins negative by atleast2 mm Unsuitable patients for APBI : T3 or T4 stage , ER-negative disease, Multifocal, Multicentric, Extensive lymphovascular invasion LVI, Positive margins. 