Final answer:
The recommended scanning plane to assess ductal involvement in intraductal papilloma is the transverse (or axial) plane.
Step-by-step explanation:
When an intraductal papilloma is identified, the recommended scanning plane to assess ductal involvement is transverse (or axial) plane. This is because the transverse plane allows for a cross-sectional view of the ducts, which helps in evaluating the extent of involvement of the papilloma within the ducts.
The transverse plane refers to the imaging plane where the ultrasound or MRI examination is performed perpendicular to the long axis of the affected duct. It provides detailed visualization of the ductal system and can demonstrate if the papilloma is confined within a single duct or involves multiple ducts.
In addition to the transverse plane, other scanning planes like the sagittal and coronal planes can also be used to complement the assessment of intraductal papilloma involvement within the ductal system.