Abstract

Background. The novel coronavirus infection SARS-CoV-2 (COVID-19) is one of high-threat respiratory diseases, characterized by multiple organ disorders with primary respiratory failure and population mortality of 2–5 %. However, the mortality of oncohematological patients treated with chemotherapy is considerably higher.
 Aim. To analyze the COVID-19 treatment outcomes in hematological malignancy patients who received drug chemotherapy.
 Materials & Methods. The clinical course of COVID-19 was analyzed in 32 hematological malignancy patients aged 31–81 years (median 62 years). The disease onset was the date of the first positive COVID-19 PCR test. These patients were transferred to an infectious hospital specialized in the therapy of the novel coronavirus infection. Pneumonia was confirmed by standard radiography and CT. Blood oxygen saturation, body temperature, ECG, and respiratory rate were monitored. Moderate and severe COVID-19 was observed in 17 (53.1 %) of 32 patients. The condition of 15 (46.9 %) patients was described as good. For comparison, a control group was collected from 32- to 79-year-old (median 63 years) patients (n = 28) having hematological malignancies but no COVID-19.
 Results. Nine (28.1 %) of 32 patients under analysis died upon increasing respiratory and multiple organ insufficiency on Day 3–17 (mean 8,6 ± 4,6 days) from the first positive COVID-19 PCR test. Death was predominantly reported in multiple myeloma patients (n = 5) as well as in a patient with Waldenstrom’s macroglobulinemia. In the control group (n = 28) with similar hematological tumors but without COVID-19, three (10.7 %) patients died throughout the 12-month follow-up period. The present paper contains a case report illustrating the clinical features of coronavirus infection in a patient with Waldenstrom’s macroglobulinemia, a monoclonal gammopathy with primary bone marrow lesions.
 Conclusion. COVID-19 is a life-threatening viral disease with high mortality in patients with hematological malignancies, especially those with plasma cell dyscrasias.

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