Epidemiological Study of Metastatic Brain Tumors in Miyazaki Prefecture: A Regional 10-year Survey in Southern Japan

This study included 425 new cases of MBTs diagnosed in Miyazaki Prefecture from 2007 to 2016. As per our findings, the most frequent primary tumor in Miyazaki Prefecture was found to be in the lung (49.4%), followed by colon/rectum/anus (9.4%) and breast (8.5%). Among patients with MBTs, 59.1% were males, a number closely similar to that of Japan, as shown in the Japanese Brain Tumor Registry (55.5%). The median age at diagnosis was 68 and 63 years in Miyazaki Prefecture and Japan, respectively. Although more patients were symptomatic in Miyazaki Prefecture than in Japan (88.5% vs. 15.5%), fewer patients opted for surgery (33.6% vs. 61.9%), probably because of their advanced age at diagnosis. As per the findings of this study, the annual incidence rate of new MBTs (i.e., ratio of the number of new cancer registrations to that of new MBT patients in Miyazaki Prefecture) was at 0.41%. The number of tumor sites in MBTs was independent of the total number of cancers per organ. Considering the expansion of cancer registries worldwide, including those on brain tumors, further epidemiological analysis of MBTs is deemed warranted.PMID:38199241 | DOI:10.2176/jns-nmc.2023-0085

Source: Neurologia Medico-Chirurgica - January 10, 2024 Category: Neurosurgery Authors: Go Takeishi Shinji Yamashita Fumitaka Matsumoto Kiyotaka Saito Takashi Watanabe Takumi Yoneyama Takuji Hinoura Hajime Ohta Kiyotaka Yokogami Yoshiki Kuroda Hideo Takeshima Miyazaki Brain Tumor Research Group Source Type: research