What is the term for the shrinkage of the uterus after menopause?

The term for the shrinkage of the uterus after menopause is physiological atrophy. This process occurs naturally as the body responds to decreased levels of estrogen following menopause, leading to a reduction in size and function of the reproductive organs, including the uterus. It's considered 'physiological' because it is a normal and expected part of the aging process rather than a result of any disease or pathological condition.

In contrast, pathological atrophy would refer to shrinkage due to disease or injury, which does not apply in this case since menopause is a normal biological transition. Similarly, physiological hypertrophy and pathological hypertrophy involve an increase in size or function of an organ or tissue, which is unrelated to the shrinkage observed in the uterus post-menopause. Thus, physiological atrophy aptly describes the normal changes occurring during this stage of life.