C30-C39: Malignant neoplasms of respiratory and intrathoracic organs
C39: Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs
Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs involves a group of conditions where there is an uncontrolled growth of abnormal cells within parts of the respiratory and intrathoracic system. This can affect areas such as the trachea, bronchus and unspecified parts of the lung. These abnormal cells, or 'neoplasms', can grow quickly and spread to other parts of the body. While some of these conditions may not cause noticeable symptoms in the early stages, as they progress, individuals might experience coughing, shortness of breath, chest pain, or unexplained weight loss. The causes vary, but many are linked to exposure to certain chemicals, smoke, asbestos, or radon.
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