Annals of Oncology 13:318-322, 2002
© 2002 European Society for Medical Oncology
Is there an increased rate of additional malignancies in patients with mantle cell lymphoma?
Department of Lymphoma and Myeloma, 1Department of Blood and Marrow Transplantation, 2Department of Biostatistics, 3Department of Epidemiology and 4Department of Pathology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
Received 31 August 2001; accepted 11 September 2001.
Purpose
To examine the frequency of additional neoplasms preceding and following the diagnosis of mantle cell lymphoma (MCL).
Patients and methods
A total of 156 patients with MCL treated on the hyperfractionated cyclophosphamide, vincristine, doxorubicin and dexamethasone alternated with methotrexate and cytosine arabinoside (Hyper-CVAD/M-A) program with or without rituximab from 1994 to 2000 were the subjects of this report.
Results
These patients were followed for a median time of 26 months, and a total of 32 (21%) additional neoplasms were diagnosed, 21 preceding the diagnosis of MCL and 11 following MCL. After excluding certain types of non-invasive neoplasms, including basal cell carcinoma, meningioma and cervical intraepithelial neoplasia, we observed seven second malignancies after the diagnosis of MCL, and the 5-year cumulative incidence rate of second malignancy was 11%. The observed-to-expected (O/E) ratio was 7/0.07 = 100 [95% confidence interval (CI) 49.3 to 186.6; P <0.0001]. Of the 21 malignancies diagnosed prior to MCL, 16 were invasive and five non-invasive. There were a total of 10 urologic malignancies occurring before or after the diagnosis of MCL was established.
Conclusions
Our findings suggest that there is an increased incidence of second malignancies in patients with MCL. In addition, the high number of cases with urinary tract cancer in our series may substantiate prior reports describing a possible association between lymphoma and urologic malignancies.
Key words: additional neoplasm, mantle cell lymphoma, second malignancy
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