د جیسن واسرمن MD PhD FRCPC لخوا
د فبرورۍ په 9، 2023
Adenocarcinoma in situ (AIS) is a type of غیر انکشاف lung cancer. It is called non-invasive because the tumour cells have not spread beyond the surface of the small airspaces called alveoli in the lung. For a tumour to be called adenocarcinoma in situ, it cannot be larger than 3.0 cm in size. If left untreated, this condition can turn into حمله کونکی اډینوکارسینوما پس له وخته.
The leading cause of adenocarcinoma in situ in the lung is tobacco smoking. Other less common causes include radon exposure, occupational agents, and outdoor air pollution.
Because these tumours are small and non-invasive, adenocarcinoma in situ on its own is not associated with any specific symptoms.
Adenocarcinoma in situ is a non-invasive type of lung cancer. That means that the cells in the tumour look very similar to the cells in حمله کونکی اډینوکارسینوما of the lung. However, in contrast to invasive adenocarcinoma, the cells in adenocarcinoma in situ are unable to spread to other parts of the body such as لمف نوډونه.
The diagnosis of adenocarcinoma in situ of the lung can only be made after the entire tumour has been surgically removed and sent to a pathologist for examination under the microscope. The diagnosis cannot be made after a small sample of the tumour is removed in a بایپسی یا کله چې سایټولوژي ترسره کیږي. ستاسو رنځپوهنه به په دقت سره تومور معاینه کړي ترڅو ډاډ ترلاسه کړي چې هیڅ ځای شتون نلري يرغل د AIS تشخیص کولو دمخه.
The inside of the lung is made up of many small airspaces called alveoli. When examined under the microscope, the tumour cells in adenocarcinoma in situ are seen covering the inside surface of the alveoli. Pathologists use the term lepidic to describe this pattern of growth. The tumour cells are typically larger and darker than the specialized pneumocytes that normally line the alveoli. Unlike minimally invasive adenocarcinoma, there is no evidence of يرغل په شاوخوا نسجونو کې.
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