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Pathology – Bronchiectasis
Definition • A pathological, irreversible dilatation of the bronchi, characterized by inflammation in the bronchial walls and surrounding lung tissue. Epidemiology • Rare in developed nations. • Continues to be a significant source of morbidity in developing nations.
Aetiology
• A structural condition stemming from a variety of diverse causes. • In industrialized countries, bronchiectasis is frequently connected to obstruction to a region of lung (e.g. tumour or foreign body) or in conjunction with cystic fi brosis. Numerous instances are determined to be idiopathic. In less developed nations, serious pulmonary infections are a significant cause.
Pathogenesis
• Believed to be a consequence of the deterioration of bronchial walls due to chronic inflammation. Scarring in the surrounding lung parenchyma exerts traction on the compromised bronchi, resulting in their permanent dilation.
Presentation: • Chronic productive cough and hemoptysis, potentially severe.
Macroscopy • The affected lung regions exhibit obviously dilated airways filled with mucopurulent material, extending to the pleural surface. • In obstructive instances, the etiology may be observed proximally, such as a neoplasm. Histopathology: Bronchial dilatation accompanied by significant chronic inflammation in the wall, frequently with lymphoid clusters and germinal centers. • Neighboring alveoli may exhibit acute and organizing pneumonia. Complications include pulmonary hypertension and right ventricular failure. • Accumulation of serum amyloid A protein in B-pleated sheets throughout many organs (AA amyloidosis)
Definition • A pathological, irreversible dilatation of the bronchi, characterized by inflammation in the bronchial walls and surrounding lung tissue. Epidemiology • Rare in developed nations. • Continues to be a significant source of morbidity in developing nations.
Aetiology
• A structural condition stemming from a variety of diverse causes. • In industrialized countries, bronchiectasis is frequently connected to obstruction to a region of lung (e.g. tumour or foreign body) or in conjunction with cystic fi brosis. Numerous instances are determined to be idiopathic. In less developed nations, serious pulmonary infections are a significant cause.
Pathogenesis
• Believed to be a consequence of the deterioration of bronchial walls due to chronic inflammation. Scarring in the surrounding lung parenchyma exerts traction on the compromised bronchi, resulting in their permanent dilation.
Presentation: • Chronic productive cough and hemoptysis, potentially severe.
Macroscopy • The affected lung regions exhibit obviously dilated airways filled with mucopurulent material, extending to the pleural surface. • In obstructive instances, the etiology may be observed proximally, such as a neoplasm. Histopathology: Bronchial dilatation accompanied by significant chronic inflammation in the wall, frequently with lymphoid clusters and germinal centers. • Neighboring alveoli may exhibit acute and organizing pneumonia. Complications include pulmonary hypertension and right ventricular failure. • Accumulation of serum amyloid A protein in B-pleated sheets throughout many organs (AA amyloidosis)
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