Brain tumour: various extrinsic and intrinsic factors add up to to cause tumour in the brain
Bronchiectasis: Chronic bronchiole dilation from secretions and blockages.
COPD: Severe obstruction of bronchial air flow typically from bronchitis and/or emphysema.
Diaphragmatic paralysis: Diaphragmatic paralysis occurs when the muscles associated with breathing become do weak to function properly. Breathing becomes difficulty and severe cases can result in death if breathing assistance is not delivered. The condition can result from such things as motor neuron disease, trauma and myopathy.