USUAL DUCTAL HYPERPLASIA Figure 3-6 USUAL DUCTAL HYPERPLASIA In this case, usual ductal hyperplasia (UDH) represented the pathologic correlate for a non-mass-enhancing lesion detected on magnetic resonance imaging (MRI). As is appreciated in this low-power image, the area of involvement by UDH is... More about this image found in USUAL DUCTAL HYPERPLASIA In this case, usual ductal hyperplasia (UDH) repr...

DUCTAL CARCINOMA IN SITU MIMICKING USUAL DUCTAL HYPERPLASIA Figure 3-35 DUCTAL CARCINOMA IN SITU MIMICKING USUAL DUCTAL HYPERPLASIA A: At first glance, nuclear variability and cellular heterogeneity can give the impression of UDH in some examples of DCIS. The presence of necrosis favors DCIS, but... More about this image found in DUCTAL CARCINOMA IN SITU MIMICKING USUAL DUCTAL HYPERPLASIA A: At first gl...

INVASIVE DUCTAL CARCINOMA AND DUCTAL CARCINOMA IN SITU (DCIS) Figure 8-17 INVASIVE DUCTAL CARCINOMA AND DUCTAL CARCINOMA IN SITU (DCIS) A: Frequently, DCIS is seen admixed and/or surrounding invasive breast carcinomas. The DCIS is recognizable as having more rounded tumor cell nests. B: High-pow... More about this image found in INVASIVE DUCTAL CARCINOMA AND DUCTAL CARCINOMA IN SITU (DCIS) A: Frequentl...

LOBULAR CARCINOMA IN SITU AND LOW NUCLEAR GRADE DUCTAL CARCINOMA IN SITU AND/OR ATYPICAL DUCTAL HYPERPLASIA (SOLID PATTERN) Figure 4-11 LOBULAR CARCINOMA IN SITU AND LOW NUCLEAR GRADE DUCTAL CARCINOMA IN SITU AND/OR ATYPICAL DUCTAL HYPERPLASIA (SOLID PATTERN) These can be difficult to distinguish... More about this image found in LOBULAR CARCINOMA IN SITU AND LOW NUCLEAR GRADE DUCTAL CARCINOMA IN SITU AN...

FIBROADENOMA WITH ATYPICAL DUCTAL HYPERPLASIA Figure 5-7 FIBROADENOMA WITH ATYPICAL DUCTAL HYPERPLASIA This fibroadenoma has a single focus of atypical ductal hyperplasia, recognizable as a monomorphic epithelial proliferation with polarization of the cells around cribriform spaces and microacini... More about this image found in FIBROADENOMA WITH ATYPICAL DUCTAL HYPERPLASIA This fibroadenoma has a sing...

FIBROADENOMA WITH DUCTAL CARCINOMA IN SITU Figure 5-8 FIBROADENOMA WITH DUCTAL CARCINOMA IN SITU A: At low power, the epithelial areas within this fibroadenoma are more proliferative and show marked cytologic atypia. B: At high power, the ducts are expanded by a highly atypical epithelial prolif... More about this image found in FIBROADENOMA WITH DUCTAL CARCINOMA IN SITU A: At low power, the epithelial...

USUAL DUCTAL HYPERPLASIA WITH NECROSIS Figure 3-12 USUAL DUCTAL HYPERPLASIA WITH NECROSIS A: Low-power image of an epithelial proliferation with central necrosis. The necrosis may raise concern for ductal carcinoma in situ (DCIS), however, the epithelial cells are not atypical and retain the usua... More about this image found in USUAL DUCTAL HYPERPLASIA WITH NECROSIS A: Low-power image of an epithelial...

FIBROADENOMA WITH USUAL DUCTAL HYPERPLASIA Figure 5-6 FIBROADENOMA WITH USUAL DUCTAL HYPERPLASIA A: Intermediate-power image of a core needle biopsy demonstrating a fibroadenoma with greater epithelial proliferation in some ducts. B: At high power, the characteristic features of cellular heterog... More about this image found in FIBROADENOMA WITH USUAL DUCTAL HYPERPLASIA A: Intermediate-power image of ...

INVASIVE CARCINOMA WITH DUCTAL AND LOBULAR FEATURES Figure 8-19 INVASIVE CARCINOMA WITH DUCTAL AND LOBULAR FEATURES Some invasive carcinomas demonstrate a combination of well-formed glands and tumor cells that infiltrate in single files with some cytologic features of lobular differentiation (e.g... More about this image found in INVASIVE CARCINOMA WITH DUCTAL AND LOBULAR FEATURES Some invasive carcinom...

INVASIVE DUCTAL CARCINOMA AND SOLID PAPILLARY CARCINOMA (IN SITU) Figure 7-31 INVASIVE DUCTAL CARCINOMA AND SOLID PAPILLARY CARCINOMA (IN SITU) A: At low power, much of the tumor is arranged in large, solid, rounded nests, with a papillary architecture. However, small foci of conventional invasiv... More about this image found in INVASIVE DUCTAL CARCINOMA AND SOLID PAPILLARY CARCINOMA (IN SITU) A: At lo...

USUAL DUCTAL HYPERPLASIA INVOLVING A PHYLLODES TUMOR Figure 5-24 USUAL DUCTAL HYPERPLASIA INVOLVING A PHYLLODES TUMOR More about this image found in USUAL DUCTAL HYPERPLASIA INVOLVING A PHYLLODES TUMOR

DUCTAL CARCINOMA IN SITU Figure 3-28 DUCTAL CARCINOMA IN SITU Low (A), intermediate (B), and high (C) nuclear grade. More about this image found in DUCTAL CARCINOMA IN SITU Low (A), intermediate (B), and high (C) nuclear g...

USUAL DUCTAL HYPERPLASIA Figure 3-11 USUAL DUCTAL HYPERPLASIA The epithelial cells in the bridge across a space involved by UDH are attenuated. More about this image found in USUAL DUCTAL HYPERPLASIA The epithelial cells in the bridge across a space...

DUCTAL CARCINOMA IN SITU: INTERMEDIATE NUCLEAR GRADE Figure 3-26 DUCTAL CARCINOMA IN SITU: INTERMEDIATE NUCLEAR GRADE Lobular involvement by DCIS. More about this image found in DUCTAL CARCINOMA IN SITU: INTERMEDIATE NUCLEAR GRADE Lobular involvement b...

INVASIVE DUCTAL CARCINOMA, GRADE 1, ARISING IN A MALE BREAST Figure 10-6 INVASIVE DUCTAL CARCINOMA, GRADE 1, ARISING IN A MALE BREAST More about this image found in INVASIVE DUCTAL CARCINOMA, GRADE 1, ARISING IN A MALE BREAST

DUCTAL CARCINOMA IN SITU: ARCHITECTURAL PATTERNS Figure 3-22 DUCTAL CARCINOMA IN SITU: ARCHITECTURAL PATTERNS Solid (A), cribriform (B), micropapillary (C), papillary (D), and clinging (E). More about this image found in DUCTAL CARCINOMA IN SITU: ARCHITECTURAL PATTERNS Solid (A), cribriform (B)...

USUAL DUCTAL HYPERPLASIA Figure 3-7 USUAL DUCTAL HYPERPLASIA A: At this intermediate-power view, the heterogeneity of the epithelial cells within the solid proliferation is appreciated. Slit-like spaces at the periphery of the involved duct are seen. B: At higher power, the variability in nuclea... More about this image found in USUAL DUCTAL HYPERPLASIA A: At this intermediate-power view, the heterogen...

USUAL DUCTAL HYPERPLASIA Figure 3-8 USUAL DUCTAL HYPERPLASIA This image illustrates the slit-like spaces so characteristic of UDH. Note the preferential distribution at the periphery of the involved duct. In this example, the myoepithelial cell layer is pronounced because the cytoplasm is clear. More about this image found in USUAL DUCTAL HYPERPLASIA This image illustrates the slit-like spaces so ch...

USUAL DUCTAL HYPERPLASIA Figure 3-9 USUAL DUCTAL HYPERPLASIA A: Low-power image shows the variability in size, shape, and placement of the epithelial cells in the involved ducts. Epithelial cell polarization is absent around the spaces present. B: High-power view depicts the heterogeneity of nuc... More about this image found in USUAL DUCTAL HYPERPLASIA A: Low-power image shows the variability in size,...