primary plasma cell leukemia in a 19-year-old female: an unusual presentation of a rare entity

Plasma cell leukemia (pcl) is a rare form of plasma cell dyscrasia with 2 variants: the primary form, which occurs de novo in patients with no previous history of multiple myeloma (mm), and the secondary form, which represents a leukemic transformation in patients with a previously recognized mm. unlike myeloma, pcl typically follows an aggressive course, and the median age at presentation is usually above 50 years. in this report, we present a case of primary pcl that manifested at 19, an exceptionally rare occurrence.