(solid tumor) An abnormal mass of tissue that usually does not contain cysts or liquid areas. Solid tumors may be benign (not cancer), or malignant (cancer). 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 (cancers of the blood) generally do not form solid tumors.

(solid tumour) Abnormal mass of tissue that usually does not contain cysts or liquid areas. Solid tumours may be benign (not cancerous), or malignant (cancerous). Different types of solid tumours are named for the type of cells that form them. If tumours are associated with those under the term cancer, these terms should be used.

A benign or malignant neoplasm arising from tissues that do not include fluid areas. Representative examples include epithelial neoplasms (e.g. lung carcinoma, prostate carcinoma, breast carcinoma, colon carcinoma), and neoplasms arising from the soft tissues and bones (e.g. leiomyosarcoma, liposarcoma, chondrosarcoma, osteosarcoma). Neoplasms originating from the blood or bone marrow (leukemias and myeloproliferative disorders) are not considered solid tumors.