lung

Carcinoid tumourlet

What is a carcinoid tumourlet? A carcinoid tumourlet is a group of neuroendocrine cells in the lung that measures less than 5 millimeters in size. In addition to the size, a group of neuroendocrine cells can only be called a tumourlet if the cells do not show any abnormal features such as an increased number …
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Minimally invasive adenocarcinoma of the lung

What is minimally invasive adenocarcinoma of the lung? Minimally invasive adenocarcinoma (MIA) is a type of lung cancer. In order to be called minimally invasive, the tumour cannot be greater than 3.0 cm in size and the area of invasion cannot be greater than 0.5 cm. In the lung, invasion is defined as the spread …
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Adenocarcinoma in situ of the lung

What is adenocarcinoma in situ of the lung? Adenocarcinoma in situ (AIS) is a type of non-invasive 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. In order for a tumour to be called AIS, it cannot be larger …
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Atypical carcinoid tumour of the lung

What is an atypical carcinoid tumour? An atypical carcinoid tumour is a type of lung cancer made up of neuroendocrine cells. In the lung, this tumour starts from the neuroendocrine cells normally found in the walls of the airways and is often located in the central part of the lung near the heart. Since it is …
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Typical carcinoid tumour of the lung

What is a typical carcinoid tumour of the lung? A typical carcinoid tumour is a slow-growing type of lung cancer made up of neuroendocrine cells. In the lung, this tumour starts from the neuroendocrine cells normally found in the walls of the airways and is often located in the central part of the lung near …
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Usual interstitial pneumonia (UIP)

What is usual interstitial pneumonia? Interstitial pneumonia is a group of diseases where inflammation and fibrosis damage small air-filled spaces inside the lungs called alveoli. Over time, the damage leads to scarring which prevents the lungs from working properly. Although the word pneumonia is used, this does not mean there is an infection in the …
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Squamous cell carcinoma of the lung

What is squamous cell carcinoma of the lung? Squamous cell carcinoma is a type of lung cancer. The tumour starts from specialized squamous cells that are normally found on the inside of the airways of the lungs. These cells normally form a barrier called the epithelium which helps protect the airways from damage. What causes …
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Adenocarcinoma of the lung

What is adenocarcinoma of the lung? Adenocarcinoma is a type of lung cancer. Adenocarcinoma starts from specialized cells called pneumocytes that line the inside of the air spaces called alveoli in the lungs. It is the most common type of lung cancer in North America. What causes adenocarcinoma in the lung? The leading cause of …
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