• Vasko Graklanov and Veselin Popov.
• First Department of Internal Diseases, Medical University of Plovdiv, Clinical Hematology Clinic, St. George University Hospital for Active Treatment, Plovdiv, Bulgaria.
• J. Int. Med. Res. 2020 Jul 1; 48 (7): 300060520943421.

PurposeTo investigate serum vitamin D levels in patients newly diagnosed with non-Hodgkin lymphoma/diffuse large B-cell lymphoma (NHL-DLBCL), multiple myeloma (MM) and chronic lymphocytic leukemia (CLL).Patients And MethodsWe measured serum levels of vitamin D by ELISA in 103 patients prior to initiation of treatment, of whom 37 were diagnosed with MM, 32 with CLL and 34 with NHL-DLBCL.ResultsSuboptimal serum vitamin D levels (<30 ng/mL) were observed in all 103 patients. In 14 patients, serum vitamin D levels were between 20 and 30 ng/mL, while all other patients had vitamin D deficiency (<20 ng/mL). Severe vitamin D deficiency (<10 ng/mL) was observed in 32.3% of NHL-DLBCL patients, 28.1% of CLL patients and 81% of MM patients.ConclusionWe observed low serum vitamin D levels in the majority of patients newly diagnosed with NHL-DLBCL, CLL and MM.

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