Answer:
Cancer is the process of cell division in which the cell loses the ability to the adhesion with the neighbor cells and multiply rapidly. This might occur due to the mutation in the tumor suppressor gene or in the oncogene.
Gastrostomy may be defined as the external opening of the stomach that helps in providing the food and nutritional support to the individual. This might perform in case of the any diseases or i case of the cancers related to mouth. The statement by the client that before starting the treatment he measure the residual volume indicates the effective teaching.