Autopsy Analysis may Contribute to Establish Actual Incidence of Second Primary Malignancies in Myeloma

Rare Tumors
Junichiro TakanoAkiyoshi Miwa

Abstract

Second primary malignancies (SPMs) are issues for patients with multiple myeloma (MM). There may have been some limitations in prior studies, such as difficulties in a longer follow-up and absence of established screening methods. Therefore, we studied autopsied cases to overcome these limitations. This study aimed to examine SPMs using autopsy reports. Ninety-one cases of MM autopsied at our institution from 1979 to 2013 were analyzed. Median age of autopsied patients was 64.1 years, and proportion of male/female was 59/32. Autopsy was performed in 35.3% of patients died of MM. There were five cases of SPMs with a median confirmation time of 38 (12-132) months from the diagnosis of MM. In three of the five patients, the diagnosis of SPMs was established at autopsy. One case was of myelodysplastic syndrome, and the others were of non-hematological malignancies. The annual risk of SPM estimated using the Kaplan-Meier method was approximately 1%. Three of five SPM cases were detected at autopsy. Analysis of autopsy may contribute to estimate the actual risk of SPMs in MM.

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