Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency

Inclusion Criteria: * Patients must have histologically confirmed newly diagnosed or previously untreated (patients may be under no treatment ?wait and watch? or have received two cycles of chemotherapy or localized radiation therapy before going on this study) non-Hodgkin?s lymphoma or CLL * Patients must have serum 25-hydroxyvitamin D (25\[OH\]D) drawn at time of enrollment; (NOTE: subjects currently taking vitamin D supplements are eligible for screening) * Simultaneous participation in other therapeutic clinical trials will be allowed * Patients must be aware of the neoplastic nature of his/her disease and willingly provide written, informed consent after being informed of the procedure to be followed, the nature of the therapy, alternatives, potential benefits, side-effects, risks, and discomforts Exclusion Criteria: * History of uncontrollable allergic reactions to vitamin D * History of Paget?s disease * Hypercalcemia * Any other clinically significant medical disease or condition laboratory abnormality or psychiatric illness that, in the investigator?s opinion, may interfere with protocol adherence or a subject?s ability to give informed consent * Inability to cooperate with the requirements of the protocol