Placental site nodule: a clinicopathological study of 20 cases
10.13315/j.cnki.cjcep.2018.06.008
- VernacularTitle:胎盘部位结节20例临床病理分析
- Author:
Xing-Zheng ZHENG
1
;
Yang ZHAN
;
Jian-Hui MA
;
Xi-Li WANG
;
Fei XU
;
Tian-Bao CHEN
;
Li-Hong ZHANG
;
Yu-Lan JIN
;
Li ZHU
Author Information
1. 首都医科大学附属北京妇产医院病理科
- Keywords:
placental site nodules;
intermediate trophoblast;
trophoblast tumor;
immunohistochemical;
hyaline degeneration
- From:
Chinese Journal of Clinical and Experimental Pathology
2018;34(6):623-626
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To investigate the clinical manifesta-tions and morphologic features of placental site nodules (PSNs), and its clinical significance. Methods Twenty patients diag-nosed as PSNs were collected, then a retrospective analysis was conducted, and the characteristics of clinical data and follow-up results were analyzed,including of clinical manifestations, ultra-sonographic evaluation, morphologic and immunohistochemical features. Results The age of patients ranged from 25 to 41 years (32. 48 ± 4. 77 years in average). Three fifths of patients had pregnancy history for at least two times and the interval time to the last pregnancy ranged from 5 to 37 months (15. 33 ± 8. 05 months on average). 15 (75% ) patients went to the hospital because of abnormal vaginal bleeding. In our study, most of the samples showed a membrane-like structure without definite nod-ule. Microscopically, single or multiple, well-circumscribed and oval small nodules were found in endometrial tissue. In most ca- ses, the hyalinization was generally uniform in the center of the nodules, more or less intermediate trophoblasts appeared on the edge of the nodules. Immunohistochemically, the strong diffuse expressed CK (AE1/AE3), CAM5. 2, EMA, GATA-3, Cyclin E and p63 were detected in most of all cases, and PLAP showed strong focal expression, α-inhibin and hPL showed faint focal expression, Ki-67 staining for proliferative index was less than 4% . Conclusion PSN is a benign lesion of the intermediate trophoblast at the chorionic leave. Some diseases including hya-linized decidua, epithelioid trophoblastic tumor, and squamous cell carcinoma with hyalinization need to be identified. Some im-munohistochemical markers may be certain helpful in distinguis-hing as necessary.
