Serous ovarian tumours

These account for about 20-50% of ovarian tumours. Histologically, papilliferous patterns are common. They are bilateral in 30% of cases. Commonly occur in women 30-40 years of age.

Benign serous cystadenomas:

• 60% of serous tumours
• 25% of all benign ovarian tumours
• 100% 10 year survival

Borderline serous tumours:

• 10% of serous tumours
• 75% 10 year survival

Malignant serous cystadenocarcinoma:

• 30% of serous tumours
• 40-50% of all malignant ovarian tumours - most common
• bilateral in 65% of cases
• 15% 10 year survival as often widely disseminated at time of diagnosis

References

1. Plaxe SC. Epidemiology of low-grade Serous ovarian cancer. Am J Obstet Gynecol 2008;198:459
2. Kurman RJ, Carcangiu ML, Herrington CS, et al. WHO classification of tumours of female reproductive organs. 4th ed. Lyon: International Agency for Research on Cancer; 2014.