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.
Pulmonary nodules are common and most are benign or noncancerous. Nodules are found on up to half of all lung CT scans. When a pulmonary nodule is cancerous, the spot or growth is usually larger than 3 cm or has other characteristics like an irregular shape. Pulmonary nodules donât cause symptoms. You may have a nodule on your lungs for years and never know it. If a spot on your lungs is cancerous, you may have symptoms related to the specific type of cancer. For example, growths caused by lung cancer may cause a persistent cough or breathing difficulties.