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.
A form of male sexual dysfunction, retrograde ejaculation means the ejaculate fluid that normally leaves the penis during orgasm takes a wrong biological turn and ends up depositing in the bladder. Here it mixes with urine and eventually leaves the body as a waste product.