Microscopic photograph of<unk> <unk>  lung carcinoma under high power. Imaging tests are often the first diagnostic step if a patient reports symptoms that may be suggestive of lung cancer. A chest x-ray is the most standard imaging test to look for any abnormality within the lung. If abnormality is present, a computed tomography (CT) scan is frequently ordered to reveal the size, shape, and position of any lung tumour and can help locate enlarged lymph nodes that might contain cancer metastasised from the lung origin. Most patients with<unk><unk><unk> <unk>  lung cancer will receive a CT scan of the chest and abdomen to search for abnormality within the lungs and lymph nodes, as well as abnormal areas in more distal organs such as adrenal glands and liver that might arise from the metastasis of lung cancer. For patients with<unk><unk><unk> <unk>  lung cancer, a positron emission tomography (PET) scan is a useful diagnostic tool to investigate the extent of lymph node involvements, which can help determine treatment options. Though results of imaging test might be suggestive of lung cancer, the actual diagnosis is made by investigating the lung<unk> s under the microscope via lab tests. The<unk> s can be obtained from lung secretions (sputum cytology), fluid removed from pleural effusion (thoracentesis), or from a suspicious area (needle biopsy).
Limited-stage small cell lung carcinoma
Minimally invasive adenocarcinoma of the lung
Salivary gland–like carcinoma of the lung
EML4-ALK positive lung cancer
Combined small-cell lung carcinoma
Atypical pulmonary carcinoid tumour
Epithelial-myoepithelial carcinoma of the lung
Large cell neuroendocrine carcinoma of the lung