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.
Retro style is style that is consciously derivative or imitative of trends, music, modes, fashions, or attitudes of the recent past. Contents. Definition. The term retro has been in use since the 1960s to describe on the one hand new artifacts that self-consciously refer to particular modes, motifs, techniques, and materials of the past. But on the other hand, many people (incorrectly) use the term to categorise styles that have been created in the past.