Abstract：
BACKGROUND: Epithelioid Trophoblastic Tumor (ETT) and Placental Site Trophoblastic Tumor (PSTT) are two of the rarest GTNs that share certain features at diagnosis and management. Atypical Placental Site Nodule (APSN) is a relatively new entity considered as a premalignant lesion.
OBJECTIVE: The aim of this review was to summarize the main characteristics of each of these entities, their diagnostic features, and their treatment\'s standard of care including fertility-sparing treatments.
RESULTS: This study provides a thorough review of ETT, PSTT, and APSN.
CONCLUSIONS: The reader will gain an insight view of these rare tumors arising from the intermediate trophoblast.
OBJECTIVE: The aim of this review was to summarize the main characteristics of each of these entities, their diagnostic features, and their treatment\'s standard of care including fertility-sparing treatments.
RESULTS: This study provides a thorough review of ETT, PSTT, and APSN.
CONCLUSIONS: The reader will gain an insight view of these rare tumors arising from the intermediate trophoblast.
摘要：
背景技术ETT和PSTT是在诊断和管理时共享某些特征的最罕见的两种GTN。APSN是一种相对较新的实体，被认为是癌前病变。目标和方法这篇综述的目的是总结每个实体的主要特征，他们的诊断特征和他们的治疗标准，包括生育保留治疗。结果对ETT进行全面审查，PSTT和APSN。结论读者将获得对这些由中间滋养细胞引起的罕见肿瘤的见解。
