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Leptomeningeal Tumor

Screening and Tests for Leptomeningeal Tumor

A leptomeningeal tumor is confirmed through the identification of malignant cells in the cerebrospinal fluid—and this confirmation is necessary because treatments for leptomeningeal tumors are potentially toxic and shouldn’t be initiated if there is any doubt about the diagnosis. The downside of this method of diagnosis, which is performed via spinal tap, is that, while it is highly accurate and reliable, it can also report false-negative results.

Screening for this type of cancer also involves an MRI scan, which can identify and help diagnose tumors in the subarachnoid area of the brain. In fact, the MRI can make a diagnosis even without an analysis of the cerebrospinal fluid. 

Locations for Leptomeningeal Tumor