Brandt K R, Coakley K J
Department of Radiology, Mayo Clinic and Foundation, Rochester, MN 55905, USA.
AJR Am J Roentgenol. 1998 Feb;170(2):485-7. doi: 10.2214/ajr.170.2.9456970.
We present the MR imaging appearance of three cases of pathologically proven placental site trophoblastic tumor (PSTT), a potentially malignant but rare form of gestational trophoblastic disease.
In our series, PSTT presented as myometrial masses that were isointense to healthy myometrium on T1-weighted images and isointense to slightly hyperintense on T2-weighted images. No associated cystic spaces or prominent blood vessels were identified. These MR findings are not specific, and the diagnosis of PSTT is made from biopsy specimen. In two cases, PSTT was invisible sonographically, and accurate localization with MR imaging allowed the patients to be treated with hysterotomy rather than with hysterectomy.
我们展示了三例经病理证实的胎盘部位滋养细胞肿瘤（PSTT）的磁共振成像表现，这是一种潜在恶性但罕见的妊娠滋养细胞疾病形式。
在我们的病例系列中，PSTT表现为子宫肌层肿块，在T1加权图像上与健康子宫肌层等信号，在T2加权图像上为等信号至轻度高信号。未发现相关的囊性间隙或明显的血管。这些磁共振成像表现不具有特异性，PSTT的诊断需依据活检标本。在两例病例中，PSTT在超声检查中不可见，磁共振成像的准确定位使患者能够接受子宫切开术而非子宫切除术治疗。
