Ovarian cyst. PELVIS:UTERUS, ADNEXA: Slightly anteverted and retroflexed uterus displaced towards the left due to a large right adnexal lesion. The endometrial 11 mm, within normal limits. Myometrium/trunk was also measures 7 mm, within normal limits without any cystic changes. The remainder of the myometrium is normal in appearance without a discrete lesion.The cervix is normal in appearance.The left ovary measures approximately 2.8 x 2.7 cm (series 601/30) with numerous physiologic follicles. In the right adnexa there is a large multiseptate cystic lesion measuring approximately 12.3 x 9.8 x 10.9 cm. Several of the larger components demonstrate low T1 weighted signal and fluid bright T2-weighted signal intensity, compatible with hemorrhagic/proteinaceous contents. Centrally the mass contains smaller multilobulated multicystic variable homogeneous density signal with very low signal foci compatible with blood product. This does not appear to enhance on postcontrast imaging. No normal right ovarian tissue is definitively identified.BLADDER: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Free fluid in the pelvis, within physiologic limits. BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
Large cystic and multiseptated right adnexal lesion without definite identification of the normal right ovarian tissue or enhancing components. Differential considerations include a cystadenoma or cystadenocarcinoma. 