Marchiafava-Bignami病:初期MRIは正常である可能性があり、脾腫病変が遅れて出現する
Tsuyoshi Nojima1, Ryo Tanabe1,2, Takafumi Obara1
1Department of Emergency, Critical Care, and Disaster Medicine, Faculty of Medicine Dentistry and Pharmaceutical Sciences, Okayama University Okayama Okayama Prefecture Japan.
Clinical case reports
|January 26, 2026
まとめ
Marchiafava-Bignami病(MBD)は、初期のMRIスキャンでは検出されない場合があります。アルコール使用障害患者にとって、脾腫病変を示すMBDが後から発生する可能性があるため、診断の遅れを防ぐために繰り返し画像検査を行うことが不可欠です。
科学分野:
- 神経学
- 放射線学
- 栄養神経科学
背景:
- Marchiafava-Bignami病(MBD)はまれな神経疾患です。
- 主に慢性的なアルコール摂取およびそれに続くチアミン欠乏に関連しています。
- 初期の症状や画像所見が非特異的であるため、早期診断が困難な場合があります。
研究 の 目的:
- Marchiafava-Bignami病における初期MRI所見が正常である可能性を強調すること。
- リスクのある集団における反復神経画像検査の重要性を強調すること。
- 進行する脾腫病変の認識の診断的有用性を強調すること。
主な方法:
- MBDが疑われる患者の臨床症例および神経画像所見のレビュー。
- MRI結果と臨床症状および栄養状態との相関。
- 連続画像検査における脾腫病変の時間的変化の分析。
主要な成果:
- MBD患者の初期MRIスキャンでは、正常または軽微な所見が見られる場合があります。
- MBDの特徴である脾腫病変は、再検査画像で現れるか進行する可能性があります。
- 決定的なMRI異常が初期にないことが、診断の遅れにつながることがよくあります。
結論:
- Marchiafava-Bignami病における初期のMRI所見は、誤解を招くほど正常である可能性があります。
- アルコール使用障害またはチアミン欠乏のリスクがある個人におけるMBDの診断には、連続MRIが不可欠です。
- フォローアップ画像検査で進行する脾腫病変を迅速に認識することが、適時介入と転帰の改善に不可欠です。
関連する概念動画
Initiation of Translation
38.9K
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
38.9K
Initiation of Translation
8.1K
8.1K
Normal Stress
1.4K
Normal stress is a type of stress that occurs when forces act perpendicular, or normal, to a material's cross-sectional area. This stress often arises in structures when subjected to axial loading, which is the application of force along the axis of an object. A practical example of this can be found in bridge truss members.
When a rod is under axial loading, the internal forces and corresponding stress are normal to the plane of the section, so it is termed normal stress. It's important to...
When a rod is under axial loading, the internal forces and corresponding stress are normal to the plane of the section, so it is termed normal stress. It's important to...
1.4K
Normal Distribution
17.1K
The normal, a continuous distribution, is the most important of all the distributions. Its graph is a bell-shaped symmetrical curve, which is observed in almost all disciplines. Some of these include psychology, business, economics, the sciences, nursing, and, of course, mathematics. Some instructors may use the normal distribution to help determine students’ grades. Most IQ scores are normally distributed. Often real-estate prices fit a normal distribution. The normal distribution is...
17.1K
Transcription Initiation
20.8K
Initiation is the first step of transcription in eukaryotes. Prokaryotic RNA Polymerase (RNAP) can bind to the template DNA and start transcribing. On the other hand, transcription in eukaryotes requires additional proteins, called transcription factors, to first bind to the promoter region in the DNA template. This binding helps recruit the specific RNAP that can assemble on the DNA and start transcription.
The promoters and enhancers and their accessory proteins allow tight regulation of...
The promoters and enhancers and their accessory proteins allow tight regulation of...
20.8K
Normal and Shear Force
3.3K
When a beam is subjected to different loads, such as weight, pressure, or other external forces, internal forces are generated within the beam. These forces can have a significant impact on the overall stability and strength of the structure. Engineers use various methods to analyze and determine the magnitude and direction of these internal forces. One common technique used to determine internal forces in beams is the method of sections. This method involves considering an imaginary point or...
3.3K


