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 #Ovarian #Ovary #Mass #Differential #Diagnosis #Algorithm #Causes #Gynecology #OBGyn
