Starry sky appearance is seen in-
Histologically, the tumour cells have very high mitotic rate and therefore high cell death. This feature accounts for the numerous macrophages in the background of this tumour containing tumour debris giving it a starry sky appearance Ref : Harsh Mohan textbook of pathology, 7th edition.Pg no.357
Burkitts lymphoma
CIL
Diffuse large B cell lymphoma
ALCL
Haematology