What condition is indicated by a smooth, shiny vulva and pale vaginal mucosa with a yellowish discharge in a 54-year-old woman?

The presentation described aligns with atrophic vaginitis, which occurs due to decreased estrogen levels commonly seen in postmenopausal women. In this condition, the vaginal walls become thinner, leading to smooth, shiny vulvar appearances and pale vaginal mucosa. This thinning also contributes to dryness and inflammation, which can cause discomfort and may be associated with a yellowish discharge as vaginal secretions change in consistency and quantity.

Atrophic vaginitis does not usually present with significant inflammation or itching, differentiating it from other conditions. The yellowish discharge can be a result of these changes rather than an infection, making atrophic vaginitis the most fitting diagnosis in this case.