Granulosa cell tumors (GCTs) are classified into two subtypes: adult granulosa cell tumors (AGCTs) and juvenile granulosa cell tumors (JGCTs). AGCTs are more common and typically occur in middle-aged or postmenopausal women, whereas JGCTs are rare and usually present in younger individuals, including children and adolescents. Clinically, AGCTs may present with symptoms related to excessive estrogen production, such as abnormal uterine bleeding or endometrial hyperplasia, while JGCTs may present with signs of precocious puberty due to estrogen production.