What are occlusions and strictures?

In medicine, occlusions refer to blockages that obstruct a blood vessel or organ, limiting or stopping the flow of fluids or substances. Strictures, on the other hand, are narrowings or constrictions in tubular structures like blood vessels or intestines, which can cause obstructions or difficulties in passing materials through them. Both occlusions and strictures can lead to various symptoms and may require medical intervention for management.