Which of the following is NOT a characteristic of nonfunctional cysts?

Nonfunctional cysts are typically not influenced by hormonal changes, which is why the choice regarding hormonal influence is the correct answer. These types of cysts, such as simple cysts or serous cystadenomas, form due to factors other than hormonal stimulation, contrasting with functional cysts like follicular or corpus luteum cysts that are directly linked to the menstrual cycle and hormonal fluctuations.

Characteristics of nonfunctional cysts include being encapsulated with fluid, which is common for these types of growths. Additionally, while primarily filled with fluid, some nonfunctional cysts can indeed contain solid components. Surgical intervention is generally not required for simple, nonfunctional cysts unless they cause symptoms or are suspected to be malignant. Therefore, the explanation regarding hormonal influence accurately identifies a significant distinction between functional and nonfunctional cysts.