Causes of Ovarian Mass - Differential Diagnosis Algorithm

Hyperplastic:

 • Polycystic ovary

 • Endometrioid cyst

Functional:

 • Follicular cyst

 • Corpus lutein cyst

 • Theca lutein cyst

Epithelial Benign Neoplasm:

 • Serous cystadenoma

 • Mucinous cystadenoma

Germ Cell Benign Neoplasm:

 • Mature teratoma (may be cystic)

 • Gonadoblastoma (can become malignant)

Sex Cord Stromal Benign Neoplasm:

 • Fibroma

 • Thecoma

 • Granulosa cell tumor

Epithelial Malignant Neoplasm:

 • Serous cystadenocarcinoma

 • Mucinous cystadenocarcinoma

 • Endometrioid

 • Clear Cell

Germ Cell Malignant Neoplasm:

 • Dysgerminoma

 • Immature teratoma

 • Yolk Sac

Sex Cord Stromal:

 • Granulosa cell tumor

 • Sertoli Cell

 • Sertoli - Leydig

Metastases:

 • Krukenberg tumor (gastrointestinal metastasis)

 • Breast



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