Incidental Metastatic Meningioma Presenting as a Large Liver Mass

Abstract EN

Meningiomas are slow growing neoplasms of the central nervous system (CNS).

Most of the tumors are benign and distant metastasis from a benign meningioma is rare.

Metastasis to the liver, although rare, usually presents with hypoglycemia or occurs in conjunction with a clinical history of an intracranial meningioma or following the resection of a prior CNS meningioma, thus making clinical diagnosis relatively easy.

Here we present an unusual case of metastatic meningioma to the liver in a 54-year-old female who presented with an incidental liver mass by ultrasound.

Her clinical history and physical examination were unremarkable.

A partial hepatectomy revealed a meningioma on histology.

Further investigation by imaging studies showed a frontal parasagittal dural mass which was confirmed to be a World Health Organization (WHO) grade 1 meningioma.

To our knowledge, this is the first report of a clinically silent metastatic meningioma to the liver without either a concurrent or a previous history of meningioma.

Precise diagnosis of this challenging case requires high clinical suspicion, histopathology, and immunohistochemistry.