Metastatic lung cancerBecause of the rich vascularization of the lung, these cancers are very common. They are due to metastases, more often in the lungs and respiratory tract, coming either through blood or the lymphatics, a cancer of primitive variable whose source is most often in the breast, digestive tract, kidney or bronchi.
The symptoms of lung cancer are similar to those of primitive bronchopulmonary cancers.
The treatment depends mostly on the nature of cancer, and in exceptional cases, treatment may be surgery. Their prognosis is generally severe.
At the time of initial diagnosis, 20% are localized diseases, 25% and 55% had regional metastases and distant metastases.
Metastases in the lung are usually hematogenous.
Although a metastasis of a cancer may appear as NSP, extrapulmonary lesions are usually multiple, spherical, well circumscribed and of variable size. Gradual increase in size and number of nodules are virtually pathognomonic, even in rare cases where the primary source is unknown.
In some cases the process is lymphogenous with metastatic deposits in lymph which can cause intraseptal reticulated appearance on X-ray and is known as lymphangitic carcinoma.
Pathological nature of pulmonary nodules can be confirmed by bronchoscopic biopsy or transthoracic biopsy.
In patients with lung metastases, it is essential to identify the nature of the primary tumor, because metastasis from thyroid carcinoma, breast or prostate has the best response to treatment.
Lung cancer is a condition that records the highest annual mortality rate. It is on the first place in number of deaths in men and second place in women, after breast cancer.
Lung cancer has a high degree of invasiveness. Cancer cells migrate to nearby organs since the early stages. Dissemination of cancer cells is called metastasis. Although it can spread to any organ, metastases of lung cancer generally occurs in the neighboring lymph nodes, adrenal glands, liver, brain and bones.
There are two forms of lung cancer:
Small cell lung cancer: the most aggressive form of lung cancer, disseminates very quickly in neighboring organs.
Non-small cell lung cancer: the most common form of lung cancer. It includes three subcategories.
Symptoms of lung cancer
Lung cancer symptoms can be confused with those of a less severe lung disease. Specific manifestations appear when the condition is already in an advanced stage and there are very high risks of dissemination to other organs. These include:
-chronic cough with bloody sputum (bloody sputum)
– hemoptysis (coughing up blood)
-chest discomfort and twinges in the lungs
-wheezing (caused by upper airway narrowing)
-changes in skin color
-quick installation of fatigue.