Prospective Validation of the ADNEX Model for Discrimination Between Benign and Malignant Adnexal Masses in Pregnancy: International Ovarian Tumour Analysis in Pregnancy Study (p-IOTA)

This study is testing a tool called the ADNEX model to better predict whether an ovarian cyst or mass found during pregnancy is cancerous or harmless. **You may be eligible if...** - You are pregnant and have been found to have an ovarian cyst or other mass near your ovary - The cyst or mass is 5 cm (about 2 inches) or larger - You are 18 years of age or older **You may NOT be eligible if...** - Your cyst is smaller than 5 cm and appears to be a normal pregnancy-related cyst - Your mass is not located near the ovary (e.g., it is a cyst on the outer lining of the abdomen) - You have already been enrolled in this study for the same cyst in a previous pregnancy - You are under 18 years of age Talk to your doctor to see if this trial is right for you.