[4 cases of tricholeukocytic leukemia]

The clinical, haematological, cytomorphological, cytochemical, ultrastructural, and bone marrow biopsy histological data observed in 4 cases of tricholeukocytic leukaemia are reported, along with some unusual findings. Stress is placed on the varied course of this disease and the difficulties associated with its treatment. Some criteria for the choice of therapy are also proposed.