Laryngeal cancer is a cancer that develops in the larynx, or voice box. It most commonly forms in the glottis, supraglottis, or subglottis. Risk factors include age over 55, male gender, smoking, heavy drinking, personal or occupational exposure to carcinogens like asbestos, acid mists, or nickel. Symptoms can include hoarseness, lump in the neck, cough, earache, and difficulty swallowing. Prevention methods include quitting smoking, limiting alcohol consumption, and avoiding asbestos exposure. Treatment depends on cancer stage and location but may involve surgery, radiation therapy, chemotherapy, or a combination of these.