Of the common causes for exudative pleural effusions, parapneumonic effusions have the highest diagnostic priority. Even in the face of antibiotic therapy, infected pleural effusions can rapidly coagulate and organize to form fibrous peels that might require surgical decortication.
Retrogradation is the landward change in position of the front of a river delta with time.etrogradation is the landward change in position of the front of a river delta with time.
Retrograde describes backwardness of one kind or another. If a country decided to go back to amputating the limbs of criminals, we might call that policy retrograde. A retrograde view of women might be one that sees them basically as housekeepers.