What is the best Anti Tubercular Tt. in a Pt.aged 75 years/F who had earlier received ATT,namely R,cin 450/Isoniazid300/ Pryizinamide1500 and ethambutol 800 mg for five months. For first two months RHEZ,and from third month onwards Rcin 450 and Isoniazid thrice a week was given. Now the axillary extrapulmonary (granulomatous) as per FNAC findings, has gravitated and opened up with some oozing of amber color fluid. Is it necrotizing caseation which has taken place below the anterior axillary fold. Is resection of the sinus is mandatory. CXR PA view reveals unfolding of aorta , aortic knuckle calcification ,prominent bronchovascular margins. --- Thanks, prodeep