6 Common Causes Of Lung Spots

6 Common Causes Of Lung SpotsA lung spot is a common problem. It is a mark that is evident by a chest X-ray or a CT scan. Presence of spots on lungs, usually indicate some kinds of lung diseases. But if you are diagnosed with lung spots then you should not come to a conclusion that you have been afflicted with lung cancer.

Of course, lung cancer is a common cause of spots on lungs, but there are several other causes too. Discussed below are 6 common causes of lung spots.

6 Common Causes of Lung Spots:

1) Lung Cancer

Lung cancer is one of the common causes of lung spots. It is believed that lung cancer is one of the leading causes of cancer death in the US. A nodule or a spot can appear on the chest X-ray of an individual suffering from lung cancer. Smokers have the greatest possibility of developing lung cancer. If you have a family history, or are exposed to asbestosis or radon gas for a long period of time, or are exposed to second-hand smoke, then you are likely to have a greater risk of developing lung cancer.

Symptoms of lung cancer may include chest pain, coughing up blood, weight loss, shortness of breath, and hoarseness. Lung cancer can be life-threatening and hence you should not take it lightly. You must get proper treatment.

2) Fungal Infection

Spots on lungs can also be formed as a result of a fungal infection. At times, you may not be even aware of the mild infection, but your body will create a barrier around it leading to the formation of a nodule. It does this with an intention to control the infection.

3) Inflammation

Certain diseases that lead to inflammation can also cause a lung spot. Rheumatoid arthritis and sarcoidosis are examples of these diseases.

4) Irritation

The National Jewish Medical and Research Center has stated that a previous injury can also be the cause of spots on the lungs. Injury can be the result of a punch in the ribs, a car accident or other similar incidents. Inflammation is caused due to previous scarring or bruising, which leads to the occurrence of lung spots.

5) Benign or Noncancerous Lung Tumors

Noncancerous or benign lung tumors usually do not exhibit any symptom. Generally, they appear as round spots on a chest X-ray. It is quite difficult to determine whether the tumor is cancerous or not. If a spot on the lung does not increase in size for more than 2 years, then it is considered as benign or noncancerous.

6) Granulomas

Apart from the above mentioned causes, granulomas are other common causes of lung spots. When a foreign invader enters the lung, the macrophages may collect around the foreign invader and form a wall around it. It appears as a nodule in the CT scan images and on chest X-ray. Chronic lung infections such as tuberculosis, cryptococcosis, histoplasmosis, blastomycosis and coccidioidomycosis are the common causes of granulomas.


Causes of lung spots may be minor as well as severe. Hence, you should get appropriate treatment if you have been diagnosed with lung spots. If you are a smoker then you must quit smoking to avoid any complication related to lung spots.

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