SMARCA4-deficient undifferentiated tumour of the lung is a rare and aggressive type of lung cancer. The term “undifferentiated” means that the cancer cells do not look like normal lung cells. The tumour is called “SMARCA4-deficient” because it lacks a functional SMARCA4 gene, which normally helps regulate how cells grow and develop. What are the symptoms …
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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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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 (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. For a tumour to be called adenocarcinoma in situ, it cannot be larger than 3.0 cm in size. If left untreated, …
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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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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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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 (SCC) is a type of non-small cell lung cancer. The tumour starts from specialized squamous cells that are normally found on the inside of the airways of the lungs. These cells form a barrier called the epithelium which helps protect the airways from damage. SCC of the lungs can be keratinizing (KSCC), …
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Adenocarcinoma is a type of non-small cell lung cancer (NSCLC) and the most common type of lung cancer accounting for 40% of all cases in North America. It starts from specialized cells called pneumocytes that line the inside of small air spaces called alveoli in the lungs. What causes adenocarcinoma in the lung? The …
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