organism form solid cancer cell 2019-03-02T11:11:33Z An abnormal mass of tissue that usually does not contain cysts or liquid areas. Solid tumors may be benign, or malignant. Different types of solid tumors are named for the type of cells that form them. Examples of solid tumors are sarcomas, carcinomas, and lymphomas. Leukemias generally do not form solid tumors. BTO:0006256 BrendaTissueOBO Marion solid tumor cell