Yes, 99% of all cysts are benign. If the cyst is complex ( a mixture of fluid and solid) or solid (more than 50% contains solid parts) the chances of it being benign are still 85%. The odds are overwhelmingly in your favor.
Eleven of the 19 Smithsonian Institution museums and galleries are at the National Mall in Washington D.C., the open-area national park in Washington, D.C running between the Lincoln Memorial and the United States Capitol, with the Washington Monument providing a division slightly west of the center.
Don't miss the other Smithsonian Museums that are located off of the Mall: National Zoo - Rock Creek Park, Washington, DC. The National Zoo is a part of the Smithsonian Institution with more than 435 different species of animals.