Definition of CATEGORICAL IMPERATIVE. : a moral obligation or command that is unconditionally and universally binding.ADVERTISEMENT.efinition of CATEGORICAL IMPERATIVE. : a moral obligation or command that is unconditionally and universally binding. ADVERTISEMENT.
A lung nodule is a mass of tissue located in the lungs. Though about 40% of these growths are benign, they can be cancerous, especially in older people and smokers. Many people with this condition don't have any symptoms, though some do have wheezing, shortness of breath, or a persistent cough.edical professionals can examine chest X-rays for indications of lung nodules. Smokers are at a serious risk of developing lung nodules. A lung nodule is a mass of tissue located in the lungs. Cancerous lung nodules may be removed through a surgical procedure.
A benign lung tumor is an abnormal growth of tissue that serves no purpose and is found not to be cancerous. Benign lung tumors may grow from many different structures in the lung. Determining whether a nodule is a benign tumor or an early stage of cancer is very important.he first thing that may come to mind is a dreaded word: cancer. In many cases, though, a lung nodule turns out to be benign. This means that it isn't cancer. A hard part is waiting and not knowing.