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membranous

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COLLAGENOUS SPHERULOSIS  A: Low-power image of a terminal duct lobular unit...
Published: 01 January 2024
COLLAGENOUS SPHERULOSIS Figure 7-14 COLLAGENOUS SPHERULOSIS A: Low-power image of a terminal duct lobular unit (TDLU) with involvement by collagenous spherulosis. B: At higher power, the rounded spaces with basement membrane are more recognizable. In addition, the spindle cell nuclei of the myoe... More about this image found in COLLAGENOUS SPHERULOSIS A: Low-power image of a terminal duct lobular unit...
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ADENOID CYSTIC CARCINOMA  Both epithelial and myoepithelial differentiation...
Published: 01 January 2024
ADENOID CYSTIC CARCINOMA Figure 8-66 ADENOID CYSTIC CARCINOMA Both epithelial and myoepithelial differentiation are seen, with production of basement membrane material. This tumor has a trabecular growth pattern. More about this image found in ADENOID CYSTIC CARCINOMA Both epithelial and myoepithelial differentiation...
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ADENOID CYSTIC CARCINOMA  The tubular pattern of adenoid cystic carcinoma i...
Published: 01 January 2024
ADENOID CYSTIC CARCINOMA Figure 8-67 ADENOID CYSTIC CARCINOMA The tubular pattern of adenoid cystic carcinoma is seen at high power. Basement membrane material is present in the pseudolumens of the tubules. More about this image found in ADENOID CYSTIC CARCINOMA The tubular pattern of adenoid cystic carcinoma i...
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FLAT EPITHELIAL ATYPIA  Intermediate- (A) and high- (B) power images illust...
Published: 01 January 2024
FLAT EPITHELIAL ATYPIA Figure 3-4 FLAT EPITHELIAL ATYPIA Intermediate- (A) and high- (B) power images illustrate the round rigid contours of the acini characteristic of FEA, luminal secretions, cuboidal epithelial cells with apical cytoplasmic snouts, and atypical monomorphic nuclei, some of whic... More about this image found in FLAT EPITHELIAL ATYPIA Intermediate- (A) and high- (B) power images illust...
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ADENOMYOEPITHELIOMA  A: Scanning magnification view demonstrates a multilob...
Published: 01 January 2024
ADENOMYOEPITHELIOMA Figure 7-39 ADENOMYOEPITHELIOMA A: Scanning magnification view demonstrates a multilobulated, multinodular lesion; at this power it is difficult to appreciate the biphasic nature of the proliferation, however, the growth pattern is characteristic of an adenomyoepithelioma. B:... More about this image found in ADENOMYOEPITHELIOMA A: Scanning magnification view demonstrates a multilob...
Images
COLLAGENOUS SPHERULOSIS  The cribriform pattern conferred by collagenous sp...
Published: 01 January 2024
COLLAGENOUS SPHERULOSIS Figure 3-20 COLLAGENOUS SPHERULOSIS The cribriform pattern conferred by collagenous spherulosis mimics that of ADH. In this example (A), there are associated microcalcifications which are the usual imaging feature of ADH. However, on high power (B), the spindled nuclei of ... More about this image found in COLLAGENOUS SPHERULOSIS The cribriform pattern conferred by collagenous sp...
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TUBULAR ADENOSIS  A: On low power, tubular adenosis has the appearance of a...
Published: 01 January 2024
TUBULAR ADENOSIS Figure 6-23 TUBULAR ADENOSIS A: On low power, tubular adenosis has the appearance of a haphazard arrangement of branching tubules. B: Intermediate power view reinforces this impression of an irregular, possibly infiltrative process. C: On high power, myoepithelial cells are not... More about this image found in TUBULAR ADENOSIS A: On low power, tubular adenosis has the appearance of a...
Images
ADENOID CYSTIC CARCINOMA  This tumor displays both epithelial and myoepithe...
Published: 01 January 2024
ADENOID CYSTIC CARCINOMA Figure 8-65 ADENOID CYSTIC CARCINOMA This tumor displays both epithelial and myoepithelial differentiation and production of basement membrane material. “True” glandular lumens and pseudolumens, formed by myoepithelial cells, which have clearer cytoplasm, are present; the... More about this image found in ADENOID CYSTIC CARCINOMA This tumor displays both epithelial and myoepithe...
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SOLID BASALOID ADENOID CYSTIC CARCINOMA  A: On low power, this tumor has a ...
Published: 01 January 2024
SOLID BASALOID ADENOID CYSTIC CARCINOMA Figure 8-68 SOLID BASALOID ADENOID CYSTIC CARCINOMA A: On low power, this tumor has a very basaloid (and solid) appearance. B: Careful examination at high power reveals areas of basement membrane material and more spindled myoepithelial cell nuclei. C: A ... More about this image found in SOLID BASALOID ADENOID CYSTIC CARCINOMA A: On low power, this tumor has a ...
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COLLAGENOUS SPHERULOSIS AND USUAL DUCTAL HYPERPLASIA  A: The principal prol...
Published: 01 January 2024
COLLAGENOUS SPHERULOSIS AND USUAL DUCTAL HYPERPLASIA Figure 7-15 COLLAGENOUS SPHERULOSIS AND USUAL DUCTAL HYPERPLASIA A: The principal proliferation is UDH, in the center of which there are more “cribriform-like” spaces, but without polarization of the surrounding cells. This is a clue to the pre... More about this image found in COLLAGENOUS SPHERULOSIS AND USUAL DUCTAL HYPERPLASIA A: The principal prol...
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FIBROADENOMA  This high-power image shows the dual cell layer of the epithe...
Published: 01 January 2024
FIBROADENOMA Figure 5-5 FIBROADENOMA This high-power image shows the dual cell layer of the epithelial component of fibroadenoma; luminal epithelial cells with relatively abundant cytoplasm and round nuclei; and the peripheral, myoepithelial cell layer which is attenuated in this example with sca... More about this image found in FIBROADENOMA This high-power image shows the dual cell layer of the epithe...
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ADENOMYOEPITHELIOMA, TUBULAR TYPE  A: This more unusual pattern of adenomyo...
Published: 01 January 2024
ADENOMYOEPITHELIOMA, TUBULAR TYPE Figure 7-42 ADENOMYOEPITHELIOMA, TUBULAR TYPE A: This more unusual pattern of adenomyoepithelioma is characterized by numerous tubules clustered together, and percolating through the breast parenchyma. B,C: At intermediate (B) and high (C) power, the tubules are... More about this image found in ADENOMYOEPITHELIOMA, TUBULAR TYPE A: This more unusual pattern of adenomyo...
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MUCINOUS MICROPAPILLARY CARCINOMA  A: Low-power image of a mucinous carcino...
Published: 01 January 2024
MUCINOUS MICROPAPILLARY CARCINOMA Figure 8-49 MUCINOUS MICROPAPILLARY CARCINOMA A: Low-power image of a mucinous carcinoma illustrating the often well-circumscribed tumor border. B: At high power, the tumor cells suggest the reversed orientation of invasive micropapillary carcinoma. C: This fea... More about this image found in MUCINOUS MICROPAPILLARY CARCINOMA A: Low-power image of a mucinous carcino...
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RADIATION EFFECT  A: At lower power, an irradiated breast demonstrates atro...
Published: 01 January 2024
RADIATION EFFECT Figure 2-16 RADIATION EFFECT A: At lower power, an irradiated breast demonstrates atrophic lobules with thickened basement membrane. Hyperchromatic nuclei are apparent in the cells within the lobules even at this power. B: On high power, this lobule has scattered epithelial cell... More about this image found in RADIATION EFFECT A: At lower power, an irradiated breast demonstrates atro...
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INTRADUCTAL PAPILLOMAS WITH COLLAGENOUS SPHERULOSIS  A,B: At low (A) and in...
Published: 01 January 2024
INTRADUCTAL PAPILLOMAS WITH COLLAGENOUS SPHERULOSIS Figure 7-6 INTRADUCTAL PAPILLOMAS WITH COLLAGENOUS SPHERULOSIS A,B: At low (A) and intermediate (B) power, this papillary proliferation appears to have foci with a more “cribriform”-like architecture. C: At high power, those round spaces contai... More about this image found in INTRADUCTAL PAPILLOMAS WITH COLLAGENOUS SPHERULOSIS A,B: At low (A) and in...
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LOBULAR CARCINOMA IN SITU INVOLVING COLLAGENOUS SPHERULOSIS  Atypical epith...
Published: 01 January 2024
LOBULAR CARCINOMA IN SITU INVOLVING COLLAGENOUS SPHERULOSIS Figure 4-10 LOBULAR CARCINOMA IN SITU INVOLVING COLLAGENOUS SPHERULOSIS Atypical epithelial cells expand the involved acinus. Round, regular spaces are present within the proliferation. At first glance, the appearance may suggest cribrif... More about this image found in LOBULAR CARCINOMA IN SITU INVOLVING COLLAGENOUS SPHERULOSIS Atypical epith...
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COLUMNAR CELL CHANGE  A: Low-power view demonstrates the variably dilated a...
Published: 01 January 2024
COLUMNAR CELL CHANGE Figure 3-1 COLUMNAR CELL CHANGE A: Low-power view demonstrates the variably dilated acini of the terminal duct lobular unit (TDLU). B: At intermediate power, the columnar nature of the epithelial cells is more readily appreciated. Some of the cells, particularly in the acini... More about this image found in COLUMNAR CELL CHANGE A: Low-power view demonstrates the variably dilated a...
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<span class="search-highlight">MEMBRANOUS</span> SEPTUM  A: Right ventricular free wall opened downward, in fresh...
Published: 15 November 2023
MEMBRANOUS SEPTUM Figure 1-19 MEMBRANOUS SEPTUM A: Right ventricular free wall opened downward, in fresh heart. Location at septal-anterior tricuspid valve commissure. The interventricular component is transilluminated (arrow). B: Opened left ventricle and aorta, in fresh heart. Location beneath... More about this image found in MEMBRANOUS SEPTUM A: Right ventricular free wall opened downward, in fresh...
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ENLARGED <span class="search-highlight">MEMBRANOUS</span> SEPTUM  Gross autopsy heart viewed from the right atriu...
Published: 15 November 2023
ENLARGED MEMBRANOUS SEPTUM Figure 25-3 ENLARGED MEMBRANOUS SEPTUM Gross autopsy heart viewed from the right atrium, demonstrating a transilluminated membranous septum (yellow arrow) that is larger than expected for this size of heart. More about this image found in ENLARGED MEMBRANOUS SEPTUM Gross autopsy heart viewed from the right atriu...
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DISPLACED NODAL TISSUE: <span class="search-highlight">MEMBRANOUS</span> SEPTUM  The AV node (black arrow) is dis...
Published: 15 November 2023
DISPLACED NODAL TISSUE: MEMBRANOUS SEPTUM Figure 25-5 DISPLACED NODAL TISSUE: MEMBRANOUS SEPTUM The AV node (black arrow) is displaced into the membranous septum. More about this image found in DISPLACED NODAL TISSUE: MEMBRANOUS SEPTUM The AV node (black arrow) is dis...