[Morphological aspects of the bone marrow in hairy-cell leukemia].

Bone marrow plays a considerable role in the diagnosis of hairy cell leukemia. The morphological aspects should be well known. One should emphasize the existence of aplastic or hypoplastic forms requiring one to repeat biopsy on the slightest clinical suscpicon. Routine histological techniques are sufficient for the diagnosis. The ultrastructural study also provides valuable histological and cytological evidence.