Ovarian Cysts and Tumors Ovarian masses or neoplasms can be cystic or solid. A cyst is fluid-filled and a tumor or âmassâ is solid. Ovarian neoplasms can also have a combination of cystic and solid features. Cysts and tumors may be benign or malignant.
Northwest Territory. The Northwest Territory, or Old Northwest, refers to the area that became the states of Ohio, Indiana, Illinois, Michigan, Wisconsin and a portion of Minnesota. The region comprises more than 260,000 square miles. The area was hotly contested by the major European colonial powers, France and Britain.
Northwest Territory. Written By: Northwest Territory, U.S. territory created by Congress in 1787 encompassing the region lying west of Pennsylvania, north of the Ohio River, east of the Mississippi River, and south of the Great Lakes.