Crazy paving

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An example of crazy paving

Crazy paving is a means of hard-surfacing used outdoors, most frequently in gardens. Paving stones of irregular size and shape are laid in a haphazard manner sometimes with mortar filling the gaps between.[1][2] The method originated in ancient Rome.[3]

The term may also refer to a pattern seen on computed tomography of the chest, involving lobular septal thickening with variable alveolar filling.[4]