Final answer:
Theca lutein cysts are often asymptomatic but may cause menstrual irregularities and dyspareunia when symptoms are present. They are usually not associated with acute pelvic pain and fever or postmenopausal bleeding.
Step-by-step explanation:
The signs and symptoms of theca lutein cysts can vary, but they are often asymptomatic. When symptoms do occur, they may include menstrual irregularities and dyspareunia (pain during sexual intercourse). These cysts are typically associated with high levels of hCG and are often related to conditions such as gestational trophoblastic disease or fertility treatments. It is uncommon for theca lutein cysts to cause acute pelvic pain and fever unless there is a complication such as rupture or torsion. However, they are not commonly associated with postmenopausal bleeding, which is a symptom typically seen with other gynecological conditions, such as endometrial or cervical cancer.