肺炎[haien] pneumonia
肺活量[haikatsuryou] lung capacity
肺肝[haikan] lungs and livers
肺結核[haikekkaku] pulmonary tuberculosis
肺臓[haizou] lungs

肺病[haibyou] lung disease
肺胞[haihou] pulmonary alveolus
肺葉[haiyou] pulmonary lobe
肺ガン[haigan] lung cancer