Adenocarcinoma is a type of cancer that begins in the cells that produce and release mucus, fluids, and other substances. It can occur in different parts of the body, including the lungs, colon, pancreas, stomach, and breast.

In the lungs, adenocarcinoma is the most common type of non-small cell lung cancer, accounting for approximately 40% of cases. It typically develops in the outer areas of the lung and is often found at an early stage.

Symptoms of adenocarcinoma depend on the location of the cancer but may include coughing, shortness of breath, chest pain, fatigue, unexplained weight loss, and changes in bowel habits or bladder function.

Treatment for this kind of cancer depends on the stage and location of the cancer and may include surgery, radiation therapy, chemotherapy, targeted therapy, or a combination of these treatments.

Prognosis for adenocarcinoma varies depending on several factors, such as the stage of the cancer, the size and location of the tumor, and the age and overall health of the patient. Early detection and prompt treatment can improve outcomes.