International Clinical and Medical Case Reports Journal (ISSN: 2832-5788) | Volume 1, Issue 5 | Case Report | Open Access

Meningeal Actinomyces Mimicking Meningioma, Case Report

Martha Lilia Tena-Suck*

Department of Neuropathology, National Institute of Neurology and Neurosurgery, Mexico

*Correspondence to: Martha Lilia Tena-Suck 

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Background: Human actinomycosis, a chronic, granulomatous infectious disease, has been recognized for a long time. Actinomyces sp. Is a commensal, filamentous, gram-positive, acid-fast-negative bacteria that can cause pyogranulomatous inflammation in animals and humans. In Central Nervous System (CNS) affection is a rare presentation disease and is usually due to extension from infected lesions or seeding from distant sites. Histologically, is characterized by a severe pyogranulomatous meningoencephalitis with intralesional filamentous bacteria that were also visible on cytology of the Cerebral Spinal Fluid (CSF).

Case Presentation: We present a rare case report of meningeal actinomyces mimicking to invasive meningioma in a 58-year-old man, a healthy farmer with no significant history, who began one month earlier with decreased visual acuity in the left eye, disorientation was found, and after with decreased MSD strength, progressive stabbing headache, and bilateral amaurosis. The MRI shows a left occipital dural lesion with a diagnosis of aggressive infiltrating meningioma. He underwent resection of the lesion that was characterized by a yellowish white granular nodule, the meninges show diffuse micronodules. Histologically, a chronic granulomatous lesion with actinomyces is identified. The patient is discharged with antibiotics improving his condition. Infection at other sites was ruled out.

Discussion: We present a case of a patient with rapidly progressive symptoms and a lesion suggestive of a meningioma.


Meningioma; Cerebral pseudotumor mimicking meningioma; Cerebral actinomyces


Martha Lilia Tena-Suck, Ana Laura Calderón Garcidueñas, Javier Alcocer, Rafael Diaz Martínez, Citlaltepetl Salinas-Lara, Carlos Sánchez-Garibay.Meningeal Actinomyces Mimicking Meningioma, Case Report.Int Clinc Med Case Rep Jour. 2022;1(5):1-7.