<prompt> Largest benign ovarian tumor is -Serous cyst adenomaMucinous cyst adenomaDermoid cystDysgerminoma  <response>: Ans. is b i.e., Mucinous cyst adenoma Serous cyst adenoma accounts for 40 of ovarian tumors, it is bilateral in 40 cases, and it can turn malignant adenocarcinoma in 40 cases. It is the MC ovarian tumor. Mucinous cyst adenoma is the largest benign ovarian tumor 