With a mean diameter of around 2700 km and a mass of 214080 Â± 520 x 1017 kg, Triton is the largest of Neptuneâs moons, and the only one large enough to achieve hydrostatic equilibrium (i.e. is spherical in shape).
Some conditions causing restrictive lung disease are: 1  Interstitial lung disease, such as idiopathic pulmonary fibrosis. 2  Sarcoidosis, an autoimmune disease. 3  Obesity, including obesity hypoventilation syndrome. 4  Scoliosis. 5  Neuromuscular disease, such as muscular dystrophy or amyotrophic lateral sclerosis (ALS).
Restrictive defects are caused by the following: 1  Loss in lung volume (eg, lobectomy) 2  Abnormalities of structures surrounding the lung (eg, pleural disorder, kyphosis, obesity) 3  Weakness of the inspiratory muscles of respiration (eg, neuromuscular disorders) 4  Abnormalities of the lung parenchyma (eg, pulmonary fibrosis)