Stroke with bleeding in the brain.

My father had sroke recently and after conducting CT scan they found out that there is bleeding in the brain. The bleed measure 12 mm. My question is.....is it necessàry to have operaton?? His CTscan reports are: Findings: Infratentorial compartment: Cerebellar hemispheres shows atrophic changes. Fourth ventricle is normal and in the midline. Brain stem including the pons and midbrain are normal. Supratentorial compartment: Smaller CT hyperdense bleed is noted in left corona radiata with affection of left Putamen.The bleed measures 12 mm. No IV extension noted. Sella and parasellar regions are normal. The third and lateral ventricles are prominent. No evidence of extradural or subdural collections noted. Rest of the cerebral parenchyma shows atrophic changes. Bilateral thalamic regions are normal. IMPRESSION:- Diffuse cerebral and cerebellar atrophic changes. Acute bleed in (L) corona radiata and Putamen.