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Published byArron Holmes Modified over 9 years ago
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Differentials
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INFLAMMATORY
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Pulmonary Tuberculosis History of cough Chest X-ray findings (+) PPD test
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NEOPLASM
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Primary Tumors Thyroid mass Lymphoma Salivary tumors Lipoma Carotid body and glomus tumors Neurogenic tumors
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Metastasis Location according to Various Primary Lesions
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LUNG CANCER
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Non-Small Cell The most common type of lung cancer. It usually grows and spreads more slowly than small cell lung cancer. There are three forms of NSCLC: Adenocarcinomas are often found in an outer area of the lung. Squamous cell carcinomas are usually found in the center of the lung by an air tube (bronchus). Large cell carcinomas can occur in any part of the lung. They tend to grow and spread faster than the other two types.
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Small Cell Most cases arise in the larger airways (primary and secondary bronchi) and grow rapidly, becoming quite large. The small cells contain dense neurosecretory granules (vesicles containing neuroendocrine hormones), which give this tumor an endocrine/paraneoplastic syndrome association. While initially more sensitive to chemotherapy and radiation, it is often metastatic at presentation, and ultimately carries a worse prognosis.
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