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Craniocaudal view

The craniocaudal view (CC view), along with the MLO view, is one of the two standard projections in a screening mammography. It must show the medial part as well the external lateral portion of the breast as much as possible.

A correctly performed CC projection may show the pectoral muscle on the posterior edge of the breast, indicating that the breast has been positioned as far forward as possible, although this is not always achievable.

An optimal craniocaudal view requires the external lateral portion of the breast, the Chassaignac's bag (the retromammary fat tissue), the pectoral muscle on the posterior edge and the nipple in profile to be clearly displayed.

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