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.
Ejaculation retrograde. Definition. Retrograde ejaculation refers to the entry of semen into the bladder instead of going out through the urethra during ejaculation. Causes, incidence, and risk factors Retrograde ejaculation may be caused by prior prostate or urethral surgery, diabetes, some medications, including some drugs used to treat hypertension (high blood pressure) and some mood-altering drugs.