Nasir Iqbal, Javed Sadiq, Mehmood Shaukat, Muhammad Ali Khan.
Space occupying benign lesions in chest in children.
Pak J Pathol Jan ;10(3):97-104.

Space occupying lesions in the chest can present in different ways. The lesions can be central or peripheral. The majority of peripheral lesions arc asymptomatic and arc detected moss often on routine chest roentgenography. Others present with thoracic complaints, chronic cough or vague chest pain. Respiratory symptoms can usually be attributed to bronchial obstruction and secondary pneumonitis when shortness of breath and tachypnea are the most common. The centrally located lesions are more symptomatic and the lesions may behave as a ball valve, depending on their size and mobility. This may produce audible wheezing on physical examination. Partial bronchial obstruction impairs clearance of secretions, contributing to recurrent bouts of pneumonia. bronchitis, bronchiectasis or abscess formation. Progression to complete bronchial obstruction usually results in atelectasis and necrosis of the distal lung.

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