Related Experiment Video
Updated: Jul 3, 2025

An Ex vivo Model of an Oligodendrocyte-directed T-Cell Attack in Acute Brain Slices
Published on: February 5, 2015
Tumefactive multiple sclerosis
Bünyamin Tosunoğlu1, Burcu Gökçe Çokal1, Hafize Nalan Güneş1
1Department of Neurology, Ankara Training and Research Hospital, Ankara, Turkey.
Abstract:
Tumefactive multiple sclerosis (MS) is a subtype of atypical and rare MS that presents with tumor-like lesions in the central nervous system. The lesions may demonstrate a mass effect, edema, with ring enhancement. They can be mistaken for brain tumors or brain abscesses radiologically and clinically. Here we describe an instructive case of a 55-year-old woman with tumefactive MS who presented with occasional numbness in her right arm and leg, headache, thought confusion, and blurred vision for 2 years.
Insights
Tumefactive multiple sclerosis (MS) is a rare, tumor-like condition of the central nervous system. This case highlights the diagnostic challenges posed by MS lesions mimicking brain tumors or abscesses.
Area of Science:
- Neuroimmunology
- Neuropathology
Background:
- Tumefactive multiple sclerosis (MS) is a rare variant of MS characterized by large, space-occupying lesions.
- These lesions can mimic primary brain tumors or abscesses, posing diagnostic challenges.
Observation:
- A 55-year-old woman presented with a 2-year history of intermittent right arm and leg numbness, headache, confusion, and blurred vision.
- Radiological imaging revealed a large, enhancing lesion in the central nervous system.
Findings:
- The patient was diagnosed with tumefactive MS based on clinical presentation, imaging, and cerebrospinal fluid analysis.
- The lesion exhibited mass effect, edema, and ring enhancement, consistent with tumefactive MS.
Implications:
- This case underscores the importance of considering tumefactive MS in the differential diagnosis of newly presenting focal neurological deficits.
- Accurate diagnosis is crucial for appropriate management and to avoid unnecessary aggressive treatments for presumed tumors or infections.

