Final answer:
The patient is likely suffering from pleural effusion, which is the accumulation of fluid in the pleural space. Further tests may be needed to confirm the diagnosis, and treatment depends on the underlying cause.
Step-by-step explanation:
The patient's symptoms of dyspnea, dry non-productive cough, diminished breath sounds, decreased tactile fremitus, and dullness to percussion over the right lower lobe suggest a possible diagnosis of pleural effusion. Pleural effusion is the accumulation of fluid in the pleural space, causing compression of the lung and resulting in respiratory symptoms. The decreased breath sounds and tactile fremitus are consistent with the presence of fluid in the pleural space.
To confirm the diagnosis, further tests such as a chest x-ray or ultrasound may be ordered. Treatment of pleural effusion involves addressing the underlying cause and may include thoracentesis (drainage of the fluid), antibiotic therapy for infection, or surgery in some cases.