恶性上皮样具有微囊或网状型的外周神经鞘瘤
Malignant epithelioid peripheral nerve sheath tumor with prominent reticular/microcystic pattern
概述:
低度恶性的上皮样恶性周围神经瘤显示微囊和网状结构
发病部位: 后腹膜
诊断要点:
- 多见于儿童,后腹膜;
- 肿瘤由中等大小的多角型,卵圆型及梭型细胞组成,基质呈黏液状、微囊及网织状,部分区域类似于微囊/网状神经鞘膜瘤,黏液样区域逐渐或突然过渡为典型的上皮样外周神经鞘膜肿瘤区域,瘤细胞轻-中度多形性,核分裂象罕见。
免疫组织化学染色:
S100,CD56,CD57,NSE 强阳性,神经周细胞标记如 EMA,Claudine-1。
鉴别诊断:
微囊/网状型神经鞘瘤
上皮样 GIST
预后:
可复发,无转移潜能
治疗:
根治性切除并随访
病例报道:
Appl Immunohistochem Mol Morphol. 2014 Sep;22(8):627-33. doi: 10.1097/PAI.0b013e318224751f.
Malignant epithelioid peripheral nerve sheath tumor with prominent reticular/microcystic patternin a child: a low-grade neoplasm with 18-years follow-up.
Agaimy A1, Stachel KD, Jüngert J, Radkow T, Carbon R, Metzler M, Holter W.
参考文献:
Appl Immunohistochem Mol Morphol. 2014 Sep;22(8):627-33. doi: 10.1097/PAI.0b013e318224751f.
Malignant epithelioid peripheral nerve sheath tumor with prominent reticular/microcystic patternin a child: a low-grade neoplasm with 18-years follow-up.
Agaimy A1, Stachel KD, Jüngert J, Radkow T, Carbon R, Metzler M, Holter W.