Surgery (removing the cancer in an operation) is the most common treatment for all stages of colon cancer. A doctor may remove the cancer using one of the following types of surgery: Local excision: If the cancer is found at a very early stage, the doctor may remove it without cutting through the abdominal wall.
The study began in 1932, when syphilis was a widespread problem and there was no safe and effective treatment. The study was designed to measure the progression of untreated syphilis. By 1947, penicillin had been shown to be an effective cure for early syphilis and was becoming widely used to treat the disease.
Syphilis, caused by bacteria, has been well known for centuries, chronicled as a scourge since at least the 1400s. In 1932, the United States government began the ignominious âTuskegee Study of Untreated Syphilis in the Negro Maleâ to observe the progress of the disease in black Alabama sharecroppers. Although penicillin had become accepted as the cure by 1945, Tuskegee researchers left the men untreated until 1972, when the study was shut down.