SERPINE1 and clear cell adenocarcinoma: Thirty-eight of 54 (70.4%) in serous adenocarcinomas, 17 of 22 (77.3%) in endometrioid adenocarcinomas, 22 of 37 (59.5%) in clear cell carcinomas and 14 of 20 (70%) in mucinous adenocarcinomas showed strong PAI-1 expression.