Different features between AML andAlL AML ALL Ag Pre-B(85%): children, 4 years adults, median age: 50 yrs Pre-T(15%): adolescent males, 1 5-20vears Fine chromatin: 3-5 Morphology nucleoli, more cytoplasm coarse and clumped chromatin containing granules, 1-2 nucleoli A uer rods histochemistry Peroxidase PAS+ 0 ADifferent features between AML and ALL Morphology coarse and clumped chromatin 1-2 nucleoli AML ALL Age adults; median age : 50 yrs Peroxidase + Fine chromatin; 3-5 nucleoli, more cytoplasm containing granules, Auer rods Pre-B(85% ): children, 4 years; Pre-T(15%): adolescent males, 15-20years PAS+ histochemistry