MRI diagnosis of placental site trophoblastic tumor
10.3969/j.issn.1002-1671.2024.12.015
- VernacularTitle:胎盘部位滋养细胞肿瘤的MRI诊断
- Author:
Weijing ZHAO
1
;
Yuting LIANG
Author Information
1. 首都医科大学附属北京妇产医院/北京妇幼保健院放射科,北京 100006
- Keywords:
placental site trophoblastic tumor;
gestational trophoblastic neoplasia;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2024;40(12):2002-2005
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical and MRI manifestations of placental site trophoblastic tumor(PSTT).Methods The MRI and clinical data of 5 cases of PSTT diagnosed by pathology were analyzed retrospectively.Results The clinical features included amenorrhea or irregular vaginal bleeding,term delivery in antecedent pregnancy,and low levels of serum β-human chorionic gonadotropin(β-HCG).The tumors of 5 cases presented as solid masses and located in the inner myometrium,along with 1 tumor involved the middle myometrium and 2 tumors involved the outer myometrium.The long diameter of tumors ranged from 2.0 cm to 4.8 cm,average(3.5±1.2)cm.The tumors presented as iso-signal on T1 WI,iso-signal and slightly hyper-signal on T2WI and diffusion weighted imaging(DWI).3 cases displayed the flow voids of vessels in tumors and myometrium.They looked like vascular enhancement during the early phases of dynamic contrast enhancement.The enhancement of the tumors was similar to myometrium in the delayed phase.1 case showed that the tumor and myometrium enhanced synchronously and the edge of the tumor had low enhancement than myometrium in the delayed phase.Another 1 case showed that the enhancement than myometrium of the tumor was significantly lower than myometrium.Conclusion The characteristic manifestations of PSTT include low levels of serum β-HCG,solid masses in the inner myometrium,and the enhancement characteristics of MRI.
