Symptoms of a Cancerous Cyst on a Lung

Cancerous cysts on the lung can cause manifest in a number of ways. Often there are no symptoms until the cyst has grown in size. Sometimes, symptoms are associated with other conditions, such as colds, over exertion and general stress. This causes people to ignore the warning signs to have a cancer screening. When left undiagnosed, cancerous cysts can grow begin to push on other organs and cause additional symptoms.

A doctor holds up an x-ray of a pair of lungs as she examines them. (Image: AzmanJaka/iStock/Getty Images)

Unexplained Weight Loss

Weight loss without trying to lose weight can be an indicator that something is making your body use more energy than normal. Weight loss may be your first sign of a cancerous cyst in the lung. Cancerous cysts can cause weight loss due to cancer cells using up much of the body's energy stores and calories. Anyone with a weight loss of 10 or more pounds without trying to lose weight should contact a doctor.


Fever can occur due to a cancerous cyst as a result of an immune system reaction to the cyst. Fevers usually do not accompany lung cysts until the cancer has spread to other organs.


Fatigue can be extreme when a cancerous cyst is present in the lungs. Fatigue related to lung cancer does not improve with rest.

Skin Changes

Skin changes are commonly associated with skin cancers, but lung cancers can also cause the skin to react. Skin changes due to cancerous cysts can include darker looking skin, yellowish skin and eyes, a reddening of the skin, itching and excessive hair growth.

Blood in the Sputum

Blood in the sputum (hemoptysis) requires an evaluation by a doctor when the amount of blood is large enough to create a rusty color.

Hoarseness and Cough

Hoarseness and a nagging coughs are associated with lung cancers. A nagging cough is identified as a cough that is present even when you do not have a cold, but will not go away. This can be caused by irritated airways.

Wheezing or Shortness of Breath

Wheezing or shortness of breath can be caused by cancerous cysts of the lungs, causing irritation.


Pain is typically a symptom of a cancerous cyst in the lung when it has already grown to push on other organs or has metastasized to other organs.

Increased Calcium Levels

Sometimes cancerous cysts in the lungs can cause increase calcium levels in the blood. In this case, the person may feel dizzy.

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