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Adenomyosis

is a medical condition characterized by the growth of cells that on the inside of the () atypically located among the cells of the wall (myometrium), as a result, thickening of the uterus occurs. As well as being misplaced in patients with this condition, is completely functional. The tissue thickens, sheds and bleeds during every cycle.

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Plain-language summary adapted from Wikipedia. Not medical advice.