Final answer:
In postmenopausal women, the normal appearance of the endometrial stripe is thin and atrophic due to the decline in hormone levels after menopause. Thickening or abnormal appearance of the endometrial stripe should be further evaluated.
Step-by-step explanation:
In postmenopausal women, the normal appearance of the endometrial stripe is thin and atrophic. This is due to the decline in estrogen and progesterone levels after menopause. The endometrial lining becomes thinner and less vascularized, resulting in a decrease in the size of the endometrial stripe. It is important to note that any thickening or abnormal appearance of the endometrial stripe in postmenopausal women should be further evaluated to rule out endometrial pathology, such as hyperplasia or cancer.