One common form of thoracic aortic aneurysm involves widening of the proximal aorta and the aortic root, which leads to aortic insufficiency.

This reconstruction project involved the replacement of overpasses, widening of the median, and the complete repaving of the road.

This has involved widening of the M25 motorway and the construction of new branches of both the Heathrow Express and the London Underground Piccadilly line.

Other types of cerebral aneurysm involve widening of an entire blood vessel, or they may appear as a "ballooning out" of part of a blood vessel.

Nasal flaring is a sign of respiratory distress that involves widening of the nostrils on inspiration.

Improvement projects carried out on the road during the 1970s, 1980s and 1990s involved periodic widening, resurfacing and the replacement of signposts.

This work would involve extensive reconstruction of stations, tunnels and bridges and widening of clearances to allow European-profile trains to run beyond the high-speed network.

An aortic dissection may also involve abnormal widening or ballooning of the aorta (aneurysm).

Other improvement projects carried out on the road during the 1970s, 80s and 90s involved periodic widening and resurfacing.