Bone marrow biopsy in staging of malignant lymphomas.

Seventy cases of malignant lymphoma studied for bone marrow involvement by Jamshidi needle trephine biopsy are reported. Bone marrow involvement was detected in 27 cases. Bone marrow biopsy helped the advancement of disease to stage IV in 22 cases though they were in stage I-III initially. Jamshidi needle biopsy was found to be a very useful diagnostic tool for detection of lymphoma deposit in the marrow.