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.
The Tuskegee Study of Untreated Syphilis in the Negro Male, which lasted from 1932 to 1972, involved 600 black men, 399 of whom had syphilis and 201 of whom did not. The men signed up with the U.S. Public Health Service, which was conducting a study on the effects of syphilis on the human body.he Tuskegee Study of Untreated Syphilis in the Negro Male, which lasted from 1932 to 1972, involved 600 black men, 399 of whom had syphilis and 201 of whom did not. The men signed up with the U.S. Public Health Service, which was conducting a study on the effects of syphilis on the human body.