Modified radical mastectomy. Modified radical mastectomy involves the removal of both breast tissue and lymph nodes: 1  The surgeon removes the entire breast.  Axillary lymph node dissection is performed, during which levels I and II of underarm lymph nodes are removed (B and C in illustration).
Castor oil is considered a vegetable oil that is pale yellow in color and is produced by crushing the seeds of the castor oil plant. Many of the benefits gained by using castor oil are a result of its chemical composition. Castor oil is a particular type of triglyceride fatty acid, with nearly 90 percent of its fatty acid substance is ricinoleic acid, which is an unsaturated omega-9 fatty acid.
Castor oil in the light keeper's house at Split Rock Lighthouse in Minnesota. Castor oil is a vegetable oil obtained by pressing the seeds of the castor oil plant (Ricinus communis).The common name castor oil, from which the plant gets its name, probably comes from its use as a replacement for castoreum, a perfume base made from the dried perineal glands of the beaver (castor in Latin).he common name castor oil, from which the plant gets its name, probably comes from its use as a replacement for castoreum, a perfume base made from the dried perineal glands of the beaver (castor in Latin).