Infantile Fibrosarcoma
夏成青 赵明 刘正智
更新时间:2020-02-05 11:15:00
同义词(或曾用名):先天性纤维肉瘤
概述:
发病部位:肿瘤主要发生于下肢远端,如足、踝和小腿,其次见于上肢远端,如手、腕和前臂,躯干和头颈部有时也可发生。
诊断要点:
免疫组织化学染色:
分子标记:
鉴别诊断:
单相纤维型滑膜肉瘤:表达AE1/AE3、CAM5.2和EMA,RT-PCR或FISH可检测出SYT-SSX,而ETV6-NTRK3为阴性;
纤维肉瘤样隆凸性皮肤纤维肉瘤:常可见普通的DFSP成分向高级别转化,免疫组化染色CD34可能表达丢失,遗传学上显示COL1A1-PDGFB基因融合;
梭形细胞横纹肌肉瘤:可见散在胞浆明显嗜酸性的横纹肌母细胞,表达desmin和myoD1等可资鉴别。
预后:
治疗:
参考文献:
AdemC, Gisselsson D, DalCinP, et al. ETV6 rearrangements in patients with infantile fibrosarcomas and congenital mesoblastic nephromas by fluorescence in situ hybridization.ModPathol 2001;14(12):1246-51.
Sheng WQ, Hisaoka M, Okamoto S, et al. Congenital- infantile fibrosarcoma. A clinicopathologic study of 10 cases and molecular detection of the ETV6- NTRK3 fusion transcripts using paraffin-embedded tissues. Am J Clin Pathol 2001;115(3):348-55
Church AJ, Calicchio ML, Nardi V, Skalova A, Pinto A, Dillon DA, et al. Recurrent EML4-NTRK3 fusions in infantile fibrosarcoma and congenital mesoblastic nephroma suggest a revised testing strategy. Mod Pathol. 2018;31:463–73.
Rudzinski ER, Lockwood CM, Stohr BA, Vargas SO, Sheridan R, Black JO, et al. Pan-Trk immunohistochemistry identifies NTRK rearrangements in pediatric mesenchymal tumors. Am J Surg Pathol. 2018;42:927–35.