<prompt> Stary sky appearance is seen in -Burkitts lymphomaMantle cell lymphomaExtra nodal marginal Zone B-cell lymphoma of MALT typeChronic myeloid leukemia  <response>: The tumor consists of sheets of a monotonous i.e. similar in size and morphology population of medium-sized lymphoid cells with high proliferative activity and apoptotic activity. The starry sky appearance seen under low power is due to scattered tingible body-laden macrophages macrophages containing dead apoptotic tumor cells. The old descriptive term of small non-cleaved cell is misleading. The tumor cells are mostly medium in size i.e. tumor nuclei size similar to that of histiocytes or endothelial cells. Small non-cleaved cells are compared to large non-cleaved cells of normal germinal center lymphocytes. Tumor cells possess small amount of basophilic cytoplasm with three to four small nucleoli. The cellular outline usually appears squared off. 