Ethanol Sclerotherapy in the Management of Ovarian Endometrioma: Technical Considerations for Catheter- and Needle-Directed Sclerotherapy.

The choice between catheter-directed and needle-directed ethanol sclerotherapy should be determined during the procedure, with a preference for catheter-directed sclerotherapy when feasible. Crucial factors in making this decision include cyst size, cyst location, cyst viscosity, and tissue rigidity. Level of evidence Level 3, non-controlled retrospective cohort study.