What Does Vascular Crowding In The Lower Lungs Mean For My Health, And Can It Improve After Years Without Infections?

What does vascular crowding in the lower lungs mean to a person s over all health. I have had some issues for a few years with chronic bronchitis for several years in a row. It was caused by seasonal allergies. It is now under control and I have had the problem in a few years. Can it reverse with years of no infections? Can it also occur in other places like the calves?