乳児の黒色神経外胚葉性腫瘍
Jeewanjot S Grewal1, Robert C John
1Department of Otolaryngology-Head and Neck Surgery, Henry Ford Health, Detroit, M.
The Journal of craniofacial surgery
|February 4, 2026
まとめ
乳児の黒色神経外胚葉性腫瘍(MNTI)は、乳児におけるまれで攻撃的な腫瘍です。この良性だが破壊的な状態の再発を防ぐためには、迅速な外科的切除が鍵となります。
科学分野:
- 小児腫瘍学
- 口腔および顎顔面外科学
- 発生生物学
背景:
- 乳児の黒色神経外胚葉性腫瘍(MNTI)は、神経堤に由来するまれな良性新生物である。
- 通常、1歳未満の乳児、特に前上顎骨に影響を与える。
- 臨床症状は、嚢胞の萌出と似ている可能性があり、診断を遅らせる可能性がある。
研究 の 目的:
- 乳児のMNTIの症例を報告する。
- 診断の課題と管理戦略を強調する。
- 迅速な外科的介入の重要性を強調する。
主な方法:
- 4ヶ月の男児が、急速に増大する上顎腫瘍を呈した。
- 診断評価には、臨床評価、レントゲン検査、組織病理検査が含まれた。
- 治療には、術前の尿中バニニルマンデル酸(VMA)評価を伴う全身麻酔下での切除生検が含まれた。
主要な成果:
- レントゲン写真では、一次切歯を押し出す拡張性の骨溶解性病変が明らかになった。
- 組織病理検査では、二相性の細胞集団と陽性の免疫組織化学的マーカー(HMB-45、ビメンチン、サイトケラチン)を有するMNTIが確認された。
- 患者は完全切除を受け、術後に正常なVMA値で再発なく経過した。
結論:
- MNTIは良性であるが、急速な成長と重大な骨破壊の可能性を示す。
- 再発を防ぐためには、正確な診断と明らかな断端を有する完全な外科的切除が不可欠である。
- 急速に成長する乳児の上顎腫瘍の管理には、臨床医の認識を高めることが不可欠である。
関連する概念動画
Socioemotional Development during Infancy
492
Socio-emotional development in infancy is primarily shaped by early emotional responses and social connections, with temperament playing a central role. Temperament refers to the consistent patterns in an individual's emotional and behavioral responses, observable even in infancy. By examining temperament, researchers can better understand an infant's unique ways of interacting with the world, influencing subsequent personality and socio-emotional growth.
Primary Temperament Types
Primary Temperament Types
492
Tumor Immunotherapy
2.0K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
2.0K
Tumor Progression
7.4K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
7.4K
The Tumor Microenvironment
7.8K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
7.8K
Cancer Stem Cells and Tumor Maintenance
6.0K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
6.0K
Loss of Tumor Suppressor Gene Functions
6.1K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
6.1K


