Dear-thanks for using our service. I understand your concern but mild pleural thickening is not a medical problem and does not need treatment, specially if you don t have any symptoms. It happens when you are exposed to some chemicals, also could be secondary to prior lung infections. We don t give antibiotics unless there is an infection. I recommend you to have a CT scan of the chest with and without contrast for a better evaluation. It will be advisible to have a pulmonary function test too ,trying to identify evidence of chronic obstructive pulmonary disease as emphysema or restrictive lung disease. I hope that my advise has been helpful DR.JC