Clinical and Prognostic Value of Sarcopenia in Patients Older Than 70 Years With Diffuse Large B-cell Lymphoma

Inclusion Criteria: * Patients \>= 70 years * DLBCL, grade IIIB follicular lymphoma or histologically proven transformed low grade lymphoma * Whatever the IPI score and the performance status * Treated by Rituximab-CHOP or Rituximab-mini-CHOP * CT scan imaging performed one month or less before inclusion * Signed informed consent Exclusion Criteria: * No initial CT scan imaging performed more than one month before inclusion * Positivity for HCV, HBV and HIV * Anthracycline contra-indication