A benign tumor or abnormal growth of decidual tissue (the uterine lining), sometimes occurring after miscarriage or incomplete abortion.
From 'decidua' plus the medical suffix '-oma' meaning tumor. This term developed in the early 20th century as pathologists described unusual tissue growths related to pregnancy complications.
A deciduoma is essentially your body's confused reaction to pregnancy loss—the uterine tissue keeps growing as if pregnancy should continue. Most disappear on their own, but this strange condition showed doctors that after miscarriage, the body needs time to 'reset.'
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