In case of paralysis of a leaf of the diaphragm, is a surgical procedure needed or can it be treated by medicines only?

Surgical procedure: If only one side of the diaphragm is paralyzed, and the muscle is so thinned out it is pushing on the lung, sometimes a procedure to plicate the muscle is performed. This should be done by a general or thoracic surgeon with experience in this technique in a minimally invasive fashion - thoracoscopiccally, or laparoscopically. I am not aware of medication that will work for this. Hope this helps!