本患儿为神经纤维瘤病Ⅰ型,除丛状神经纤维瘤病变外,全身有许多咖啡斑,并有腹股沟雀斑。复习一下神经纤维瘤病:
神经纤维瘤病(Neurofibromatosis, NF)的两种主要类型是NF1和NF2.NF1又称von Recklinghausen disease, 是一种常染色体显性遗传病,定位于染色体17q11.2的NF1基因,NF1基因有59个外显子,编码327D的蛋白质—neurofibromin,行使肿瘤抑制功能,如发生突变则导致NF1发生。NF1有特殊的临床表型,其诊断标准满足以下两项即可:
- Six or more café-au-lait spots that are greater than 1.5 cm in postpubertal individuals or 0.5 cm or larger in prepubertal individuals (6个或6个以上的皮肤咖啡斑,成年人直径大于1.5 cm,未成年人大于0.5 cm)
- At least two neurofibromas of any type or at least 1 plexiform neurofibroma (至少2个神经纤维瘤或至少1个丛状神经纤维瘤)
- Freckling in the axilla or groin (Crowe's sign) (腋或腹股沟雀斑)
- Optic glioma (视神经胶质瘤)
- At least two Lisch nodules (benign iris hamartomas) (至少两个虹膜错构瘤结节)
- A distinct bony lesion including sphenoid wing dysplasia or thinning of the long bone cortex (蝶骨翼发育不良或长骨皮质变薄)
- A first-degree relative with NF1(有一级NF1亲属)
丛状神经纤维瘤需密切随访观察,5%-13%患者可发展为恶性外周神经鞘瘤。
NF2基因定位于2 2q11,其缺失与听神经瘤、神经纤维瘤、脑膜瘤有关。NF2诊断标准(满足1或2):
- Bilateral masses of the eighth cranial nerve seen with appropriate imaging techniques (eg, CT, MRI) (CT/MRI提示双侧听神经肿瘤)
- A first-degree relative with NF-2 and either (a) a unilateral mass of the eighth cranial nerve or (b) 2 of the following: neurofibroma, meningioma, glioma, schwannoma(有NF2一级亲属和/或(a)单侧听神经肿瘤或(b)神经纤维瘤,脑膜瘤,胶质瘤,雪旺细胞瘤)
本患儿为神经纤维瘤病Ⅰ型,除丛状神经纤维瘤病变外,全身有许多咖啡斑,并有腹股沟雀斑。复习一下神经纤维瘤病:
神经纤维瘤病(Neurofibromatosis, NF)的两种主要类型是NF1和NF2.NF1又称von Recklinghausen disease, 是一种常染色体显性遗传病,定位于染色体17q11.2的NF1基因,NF1基因有59个外显子,编码327D的蛋白质—neurofibromin,行使肿瘤抑制功能,如发生突变则导致NF1发生。NF1有特殊的临床表型,其诊断标准满足以下两项即可:
- Six or more café-au-lait spots that are greater than 1.5 cm in postpubertal individuals or 0.5 cm or larger in prepubertal individuals (6个或6个以上的皮肤咖啡斑,成年人直径大于1.5 cm,未成年人大于0.5 cm)
- At least two neurofibromas of any type or at least 1 plexiform neurofibroma (至少2个神经纤维瘤或至少1个丛状神经纤维瘤)
- Freckling in the axilla or groin (Crowe's sign) (腋或腹股沟雀斑)
- Optic glioma (视神经胶质瘤)
- At least two Lisch nodules (benign iris hamartomas) (至少两个虹膜错构瘤结节)
- A distinct bony lesion including sphenoid wing dysplasia or thinning of the long bone cortex (蝶骨翼发育不良或长骨皮质变薄)
- A first-degree relative with NF1(有一级NF1亲属)
丛状神经纤维瘤需密切随访观察,5%-13%患者可发展为恶性外周神经鞘瘤。
NF2基因定位于2 2q11,其缺失与听神经瘤、神经纤维瘤、脑膜瘤有关。NF2诊断标准(满足1或2):
- Bilateral masses of the eighth cranial nerve seen with appropriate imaging techniques (eg, CT, MRI) (CT/MRI提示双侧听神经肿瘤)
- A first-degree relative with NF-2 and either (a) a unilateral mass of the eighth cranial nerve or (b) 2 of the following: neurofibroma, meningioma, glioma, schwannoma(有NF2一级亲属和/或(a)单侧听神经肿瘤或(b)神经纤维瘤,脑膜瘤,胶质瘤,雪旺细胞瘤)