Balci, MahiOzdemir, Gulhan2025-01-212025-01-2120210030-9982https://doi.org/10.47391/JPMA.798https://hdl.handle.net/20.500.12587/23311OBJECTIVE: To investigate the expressions of immunohistochemical markers P63, P27, P57, Ki-67 and CD146 in hydropic and molar specimens in order to explore their role in the pathogenesis of molar gestations. METHODS: The retrospective study was conducted at the Kırıkkale Medical University, Turkey, and comprised data from 2011 to 2018 related to patients with a definitive pathological diagnosis of hydropic abortus, complete hydatidiform moles and partial hydatidiform moles. Immunoreactivity using antibodies against P63, P27, P57, Ki-67 and CD146 was scored by evaluating the percentage of distinctly stained cells. Data was analysed using SPSS 15. RESULTS: Of the 37 specimens, 10(27%) were hydropic abortus, 17(46%) partial hydatidiform moles and 10(27%) complete hydatidiform moles. Patients with complete hydatidiform moles severe cytologic atypia in CD146-positive extravillous trophoblastic column and florid syncytiotrophoblast proliferation. P57 immunostaining was negative in 9(90%) patients with complete hydatidiform moles, whereas all patients in the two other groups showed positive immunostaining, and they also showed P63 and Ki-67 overexpression in cytotrophoblasts. P27 was expressed in differentiated, non-dividing syncytiotrophoblasts but did not yield any diagnostic aid. CONCLUSIONS: The proliferative activity location varied between molar and nonmolar pregnancies.eninfo:eu-repo/semantics/openAccessHydatidiform mole, Hydropic abortion, P63, P27, P57, Ki-67, CD146.Article71379680010.47391/JPMA.7982-s2.0-8510732293034057923Q3