👉 Lymphoblastosis is a type of cancer that occurs in the body's lymphatic system, which helps to fight infections and diseases. It can occur anywhere in the body, but it is more common in the skin, mouth, nose, throat, and lungs. The term "lymphoblastosis" refers to the abnormal growths or tumors that develop from the cells of the immune system called lymphocytes. These cells are responsible for fighting infections by producing chemicals that kill bacteria and viruses