Early findings:

Vague pelvic pain
Abdominal pain
Abdominal fullness
Indigestion
Bloating
Altered bowel habits
Palpable adnexal mass

Late findings:

Ascites
Intestinal obstruction
Chronic cough
Weight loss
Precocius puberty (Gonadal stromal tumors)
Virilization (Gonadal stromal tumors)