CYSTIC BRONCHIECTASIS  affecting both lower lobes (L>R)

 

BRONCHIECTASIS

          Irreversible abnormal dilatation of the bronchial tree.

CAUSES   

Developed countries - most common cause        -   cystic fibrosis.
Rest of the world (Again, half of which is india..!) -   post infective.
Dyskinetic cilia syndrome
Foreign body
Neoplasm 
Metastasis

PATHOLOGICAL TYPES

                            cylindrical     ðŸ¥’                    varicose   ðŸ                       saccular(cystic)🍇

1.CYLINDRICAL BRONCHIECTASIS

          Bronchi regular in outline
          distal lumen not much dilated
          abrupt termination
          no. of subdivisions of bronchial tree - 7-20 (i.e normal)


2.VARICOSE BRONCHIECTASIS

          more severe
          Bronchi irregular in outline
          bulbous termination
          no. of subdivisions of bronhcial tree - 6-7 (N - 17-20)


3.SACCULAR (CYSTIC) BRONCHIETASIS

          progressive dilatation towards periphery
          ballooned outline
          no. of subdivisions of bronchial tree - max 5

RADIOLOGICAL FINDINGS

    Increase is size of markings, and loss of definition.

    crowding of markings (due to volume loss, which almost always occurs)

    cystic spaces (upto 2cm)

    areas of honeycombing (in advanced cases)

    compensatory overinflation of remainder of lung