<unk>  is a form of gestational trophoblastic disease, which is thought to arise from intermediate trophoblast. It may secrete human<unk>  lactogen (human chorionic somatomammotropin), and result in a false-positive pregnancy test.<unk>  is a monophasic neoplasm of the implantation<unk>  intermediate trophoblast, and usually a benign lesion, which comprises less than 2% of all gestational trophoblastic proliferations. Preceding conditions include molar pregnancy (5%). Compared to choriocarcinoma or invasive mole, hemorrhage is less conspicuous and serum β-HCG level is low, making early diagnosis difficult. Immunohistochemistry: Often stains with hPL, keratin, Mel-CAM, EGFR.
Placental site trophoblastic tumor
Gestational choriocarcinoma
Gestational trophoblastic disease
Invasive hydatidiform mole
Epithelioid trophoblastic tumour
Molar pregnancy
Cryptic pregnancy
Heterotopic pregnancy