Malignant Ovarian Surface Epithelial-Stromal Neoplasm, also known as malignant ovarian surface epithelial-stromal tumor, is related to ovarian carcinosarcoma and malignant ovarian brenner tumor. An important gene associated with Malignant Ovarian Surface Epithelial-Stromal Neoplasm is MIR21 (MicroRNA 21), and among its related pathways/superpathways are MicroRNAs in cardiomyocyte hypertrophy and miRNA role in immune response in sepsis. Affiliated tissues include ovary.