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Intraplacental choriocarcinoma with fetomaternal transfusion
Author(s) -
Takai Noriyuki,
Miyazaki Tami,
Yoshimatsu Jun,
Moriuchi Akira,
Miyakawa Isao
Publication year - 2000
Publication title -
pathology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
eISSN - 1440-1827
pISSN - 1320-5463
DOI - 10.1046/j.1440-1827.2000.01036.x
Subject(s) - choriocarcinoma , placenta , human placental lactogen , chorioepithelioma , human chorionic gonadotropin , medicine , pathology , chorionic villi , placenta diseases , placental site trophoblastic tumor , immunohistochemistry , trophoblast , fetus , pregnancy , biology , hormone , genetics
Intraplacental choriocarcinoma is very rare, and is usually found only after maternal and fetal metastatic disease is identified. The purpose of this case report is to review the incidence and findings of intraplacental choriocarcinoma. A term placenta was investigated because the newborn was born with severe anemia (Hb 3.0 g/dL). A 2 cm nodule was noted on the surface of the amniotic membrane and grossly resembled an infarction. The tumor was examined microscopically with immunohistochemical staining for the alpha‐ and beta‐human chorionic gonadotropin ( α ‐hCG, β ‐hCG) subunits, human placental lactogen (hPL) and Ki‐67. Microscopically, the tumor consisted of necrotic areas with proliferation of atypical trophoblastic cells and destruction of the villi and capillaries. The cells were positive for the α ‐hCG, β ‐hCG subunits, hPL and Ki‐67, consistent with intraplacental choriocarcinoma. The mother and newborn were investigated for the presence of metastatic disease. Computed tomography scans and magnetic resonance imaging of the mother and infant were negative for metastatic disease. Choriocarcinoma, limited only to the placenta with no evidence of metastatic disease is very rare. Primary intraplacental choriocarcinoma may frequently be overlooked or missed, and choriocarcinoma may possibly arise in the placenta more often than in retained or persistent trophoblast following pregnancy.