Aim: To evaluate the age presentation of B-cell lymphoblastic leukemia.

Study design: The design of the study was cross sectional.

Setting of study: PGMI, Chughtai Institute of Pathology.

Duration of study: The duration of study was one year i.e., from 1st July 2019 to 31st June 2020.

Methods: A sample of 56 patients were included in the study. The selection of the patients was in accordance with the criteria set in the inclusion and exclusion group of the study. All the cases presenting with B-cell lymphoblastic leukemia were analyzed based on age presentation. The quantitative variable of age was recorded in Proforma. The statistical evaluation was done using SPSS version 22. The quantitative age variable was presented as mean + standard deviation

Results: The results of the study showed variation of age presentation, ranging from two years to fourteen years (2Y-14Y). The youngest patient at presentation was only 2Y of age. The mean age of presentation however was ranged at 6.28Y. The eldest presentation of B-cell lymphoblastic leukemia was 14Y. The SD value of our quantitative variable of age is 3.29.

Conclusion: The rationale of the study helped us determining the peak incidence of age presentation for B-cell lymphoblastic leukemia in children. The age ranged from 2 years to 14 years, with peak at 6 years. We conclude that these results are in close association with the findings in result of the developing countries of the world

Keywords: Lymphoblastic leukemia, B-cell, childhood