A positron emission tomography (PET) scan is a medical imaging technique used to examine the functions of certain organs in the body. A PET scan is a sophisticated and advanced test that employs a radioactive tracer that detects the variation in tissues on a molecular level. In a broader perspective, the test is developed to go beyond anatomy and understand the functions of the cell in the organ’s tissue.

Lung cancer forms tumors in the body that affect the lungs and cause blockages. 3 signs of lung cancer include wheezing, shortness of breath, and blood in the mucus. Although surgery and advanced chemotherapy help to remove and kill these cancerous tumors, there are rapid research and development in treating lung cancer.

Metastatic breast cancer is a kind of breast cancer that has spread to other organs or lymph nodes surrounding the breast. Although incurable, there is treatment which can delay its progression and relieve its symptoms. Metastatic breast cancer patients usually survive for 18 to 24 months. Metastatic Breast Cancer Symptoms Metastatic breast cancer signs depend on the organs or parts of the body to which the cancer has progressed.

A person diagnosed with lung cancer is said to have reached stage IV or metastatic stage when the lung cancer cells breaks away from the tumor and travels to various parts of body through blood and lymph system. It is even possible that the lung cancer has reached the metastatic stage even before it is diagnosed.

Cancer that spreads beyond its source of origin is termed as metastatic cancer, which in case of kidney cancer results in a condition called metastatic renal cell carcinoma. Stage 4 kidney cancer is most advanced and at this point, cancer starts spreading to vital organs in the body through a process called metastasis.

The meaning of the word “metastatic” is rapid transition from one point to another. It is usually used with those types of diseases that have a nature of spreading to various parts of body. Metastatic is generally related with malignancy which is nothing but a medical term for cancer. Thus, metastatic malignant melanoma is nothing but an advanced stage of cancer.