Look Out For These Symptoms, You May Be Having A Lung Cancer!!! Warning Signs Of Lung Cancer [Video]

Lung cancer is the leading cause of cancer related deaths worldwide.
And it usually peaks at about 50 to 69 years.
However, approximately 2% of lung cancers occur before the age of 40.
Unlike some other types of cancers, lung cancer has a very poor prognosis since most of them are diagnosed at a late stage.
Most patients who develop lung cancer are smokers and have smoking related damage to the heart and lungs.
Other causes for lung cancer include exposure to substances such as Radon, Asbestos, Halogen ether, Arsenic, Ionizing radiation, Chromium, Nickel, and Vinyl chloride.
Chronic interstitial pneumonitis.
And environmental pollution.
Lung cancers can be broadly categorized into primary and secondary malignancies.
Primary lung cancers are generally divided into 2 main groups.
Small cell lung cancer, and non-small cell lung cancer, which accounts for about 85% of the total lung cancer cases.
Histologically, non-small cell lung cancers are further divided into Adenocarcinoma, Squamous cell carcinoma, And Large cell carcinomas.
Secondary lung cancers occur when a cancer had started elsewhere in the body, and spreads into the lungs through blood or lymphatics.
This is called metastasis of the initial tumor.
Lung cancers are often insidious, producing no symptoms until the disease is well advanced.
But, about 7 to 10% of lung cancers are diagnosed early in asymptomatic patients when a chest radiograph performed for other reasons.
At the initial diagnosis, about 20% of patients have only the localized disease.
About 25% of patients have regional metastasis.
And about 55% of patients have distant spread of cancer, which makes the prognosis extremely poor.
Symptoms due to the primary tumor include, Cough, which is the commonest complaint of lung cancer patients.
Wheezing, due to airway obstruction.
Post obstructive pneumonia, caused by accumulation of secretions distal to the obstruction that is complicated by infection.
Shortness of breath.
Coughing up blood, also known as hemoptysis.
Pleural effusions.
And chest pain.
Symptoms due to loco regional spread include the following.
Paralysis of the recurrent laryngeal nerve can cause hoarseness, or complete loss of voice, And Difficulty in breathing.
Paralysis of the phrenic nerve can cause diaphragmatic paralysis, which can cause difficulty in breathing.
And pressure on the sympathetic plexus can cause Horner’s syndrome, which is characterized by a triad of symptoms. Anhidrosis, or absence of sweating in the affected side, partial ptosis, or partially closed eye lid, and miosis, or constricted pupil.

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