A benign tumor of the chorion or chorionic tissue, often associated with pregnancy.
From chorio- (Greek khoros 'membrane') + adenoma (Greek aden 'gland' + -oma 'tumor'). Medical term describing glandular tumors of fetal membranes.
This mouthful of a word is what doctors call molar pregnancies or hydatidiform moles—abnormal tissue growths that happen when something goes wrong very early in pregnancy development.
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