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.
If a lung nodule is considered highly suspicious for lung cancer based on its size, shape and appearance on chest x-ray or CT scan as well as considering other risk factors such as your smoking history and family history of cancer, it will need to be biopsied to determine if it is cancerous.