This word is acceptable for play in the UK dictionary that is being used in the following games:

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n. Reconstructive or cosmetic plastic surgery to alter the size or shape of the breast or breasts.

n. Plastic surgery of a breast to alter its shape or size.

"Two sets of well-characterized tissues were utilized: one from breast cancer patients with favorable vs. poor outcome and the other from healthy women undergoing reduction mammaplasty."

mastoplasty