Lymphoma, Diffuse Undifferentiated

Medical Condition:
Lymphoma, Diffuse Undifferentiated

A high-grade malignant lymphoma that includes both Burkitt tumor (BURKITT LYMPHOMA) and other lymphomas previously designated undifferentiated non-Burkitt type. Nuclei in Burkitt tumor are round to ovoid and uniform in size. The non-Burkitt type exhibits greater nuclear variation and less evidence of cellular maturation with a correspondingly lesser degree of differentiation.