Work

A Case Report of Progressive Multifocal Leukoencephalopathy (PML) in an Immunocompetent Patient

Year: 2025

Type: article

Abstract: Progressive multifocal leukoencephalopathy (PML) is a rare but fatal demyelinating disorder resulting from reactivation of latent John Cunningham virus (JCV), which induces demyelinating lytic infection of oligodendrocytes. We report a case of PML in an individual without identifiable immunodeficiency who presented with insidious and progressive deficits in speech and motor function. Diagnostic workup revealed JC viral DNA in cerebrospinal fluid, and magnetic resonance imaging (MRI) demonstrated multiple asymmetric lesions within the subcortical and deep white matter. Despite administration of the immune checkpoint inhibitor pembrolizumab, the patient's neurological status continued to decline, culminating in death. This case underscores the necessity of considering PML in the differential diagnosis of patients lacking classic risk factors when clinical presentation and neuroimaging findings are indicative of demyelinating pathology.

Source: Cureus

DOI: 10.7759/cureus.91491

Authors: Kazi Subrina Nazneen, Nicole Mascarenhas, Eiman Elsheikh, SM Rezwanuzzaman, Sunil Kumar

Institution: Medway NHS Foundation Trust

Language: English

Topic: Polyomavirus and related diseases

Subfield: Oncology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W4413919699