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.
Retroactivity is the process of applying laws to events that took place earlier, i.e ., even before the law was passed. U.S. jurisprudence does not favor retroactivity.[i] Generally, rules and regulations are not retroactive.