[Contribution of cytochemistry and delayed hypersensitivity skin tests in the diagnosis and prognosis of chronic lymphoproliferative syndromes].

Cytochemistry is disappointing in lymphoproliferative syndromes for it does not permit one to classify the various diseases with certainty. In the early stages, if the three indices are lowered, the prognosis seems poorer. A study of glucuronidase permits, in hyperlymphocytosis, one to differentiate benign from malignant lymphocytes, but does not permit one to differentiate from one another, the other chronic lymphoproliferative syndromes. The acid phosphatase is interesting in the study of hairy cell leukemia. Finally, it was not possible to distinguish chronic lymphoid leukemia from leukemia with lymphosarcomatous cells, nor from the cytochemical point of view nor using tests for delayed hypersensitivity.