Hodgkin Variant of Richter’s Transformation in Chronic Lymphocytic leukemia (CLL): An Illustrative Case Report and Literature Review - Gupta, Nishit; Mittal, Aditi; Duggal, Rajan; Dadu, Tina; Agarwal, Amit; Handoo, Anil (International Journal of Hematology-Oncology and Stem Cell Research, 2021)