Doctor Who Holiday Special Sneak Peek

Usual Ductal Hyperplasia (UDH) • Oval, “streaming”, overlapping nuclei separated by irregular distances; nuclei tend to run parallel to the duct wall • Secondary lumens are irregularly shaped (often peripherally located). • “Florid UDH” can be used if ducts are nearly completely filled but don’t meet requirements for ADH or DCISAtypical Ductal Hyperplasia (ADH) • No currently agreed upon requirements except that it CANNOT HAVE HIGH GRADE ATYPIA (makes it high grade DCIS if present) • So