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Updated: Mar 13, 2026

Minimally Invasive Cisterna Magna Injection Model for Leptomeningeal Metastasis Studies in Mice
Published on: May 23, 2025
Leptomeningeal metastasis from gynecologic cancers diagnosed by brain MRI
Masafumi Toyoshima1, Keita Tsuji2, Shogo Shigeta2
1Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Obstetrics and Gynecology, Sendai Medical Center, National Hospital Organization, Sendai, Japan.
Abstract:
Leptomeningeal metastasis (LM) is rarely observed in gynecologic cancers. As gadolinium-enhanced magnetic resonance imaging (Gd-MRI) is highly effective for diagnosing LM, the aim of this study is to describe the clinical behaviors and outcomes of LM patients who were diagnosed by Gd-MRI. After securing institutional review board approvals, we retrospectively reviewed patient records. Eight patients were found to have LM from gynecological malignancies. Primary tumors included three ovarian cancers, one tubal cancer, one peritoneal cancer, two endometrial cancers, and one cervical cancer. Gd-MRI of the brain and the spine is indicated as the high-priority inspection for the diagnosis of this devastating complication.

