Search Results for stromal

INFLAMMATORY SINONASAL POLYP: ATYPICAL STROMAL CELLS Figure 1-7 INFLAMMATORY SINONASAL POLYP: ATYPICAL STROMAL CELLS Scattered stellate or spindled fibroblasts with large, hyperchromatic nuclei are often seen in inflammatory polyps. They should not be interpreted as neoplastic. More about this image found in INFLAMMATORY SINONASAL POLYP: ATYPICAL STROMAL CELLS Scattered stellate or...

PitNET Figure 1-168 PitNET A number of patterns and stromal changes are seen in PitNET: organoid growth (A), packeted or alveolar pattern with vascularized stroma (B), glandular to papillary architecture (C), spindled to fascicular architecture (D), single cell infiltration between desmoplastic More about this image found in PitNET A number of patterns and stromal changes are seen in PitNET: organo...

NASOPHARYNGEAL ANGIOFIBROMA Figure 3-31 NASOPHARYNGEAL ANGIOFIBROMA Stromal cells show strong nuclear positivity for β-catenin (A) and scattered stromal cells are positive for androgen receptor (B). More about this image found in NASOPHARYNGEAL ANGIOFIBROMA Stromal cells show strong nuclear positivity f...

CENTRAL ODONTOGENIC FIBROMA, GRANULAR CELL VARIANT Figure 5-99 CENTRAL ODONTOGENIC FIBROMA, GRANULAR CELL VARIANT The stromal component consists of large polygonal cells with abundant granular cytoplasm. More about this image found in CENTRAL ODONTOGENIC FIBROMA, GRANULAR CELL VARIANT The stromal component c...

: Blurring of the epithelial-stromal interface with stromal eosinophils. More about this image found in BARNACULATE CARCINOMA A,B: Complex folding and invaginations of the epithe...

LIPOSARCOMA Figure 7-55 LIPOSARCOMA A: Well-differentiated liposarcoma shows, at low magnification, mixed mature adipose tissue and areas of dense fibrous tissue with scattered, large atypical stromal cells. B: Intermediate-magnification view of a well-differentiated liposarcoma showing More about this image found in LIPOSARCOMA A: Well-differentiated liposarcoma shows, at low magnification...

FIBROUS DYSPLASIA Figure 5-205 FIBROUS DYSPLASIA At high power, the trabeculae lack osteoblastic rimming, and the stromal component is bland. More about this image found in FIBROUS DYSPLASIA At high power, the trabeculae lack osteoblastic rimming,...

DESMOPLASTIC AMELOBLASTOMA Figure 5-49 DESMOPLASTIC AMELOBLASTOMA The tumor is characterized by a desmoplastic stromal response, compression of the tumor islands, and loss of diagnostic ameloblastic features. More about this image found in DESMOPLASTIC AMELOBLASTOMA The tumor is characterized by a desmoplastic st...

INFLAMMATORY SINONASAL POLYP Figure 1-6 INFLAMMATORY SINONASAL POLYP The typical appearance is a polypoid mass of sinonasal mucosa with stromal edema and a mild chronic inflammatory cell infiltrate. More about this image found in INFLAMMATORY SINONASAL POLYP The typical appearance is a polypoid mass of ...

RHINOSPORIDIOSIS Figure 1-15 RHINOSPORIDIOSIS A: Numerous cysts of variable sizes are present in the stroma. B: Larger cysts contain numerous spores, and rupture of cysts can induce acute stromal inflammation. More about this image found in RHINOSPORIDIOSIS A: Numerous cysts of variable sizes are present in the st...

ORAL DYSPLASIA Figure 4-20 ORAL DYSPLASIA A: The band-like inflammatory infiltrate at the epithelial-stromal interface imparts a “lichenoid” appearance. B: Severe dysplasia arises abruptly from histologically normal epithelium. More about this image found in ORAL DYSPLASIA A: The band-like inflammatory infiltrate at the epithelial-...

TYPICAL HPV-ASSOCIATED NONKERATINIZING SQUAMOUS CELL CARCINOMA Figure 2-6 TYPICAL HPV-ASSOCIATED NONKERATINIZING SQUAMOUS CELL CARCINOMA Ribbons of tumor line the surface of a tonsillar crypt, with pushing borders and no stromal desmoplasia. More about this image found in TYPICAL HPV-ASSOCIATED NONKERATINIZING SQUAMOUS CELL CARCINOMA Ribbons of ...

CEMENTO-OSSIFYING FIBROMA Figure 5-122 CEMENTO-OSSIFYING FIBROMA The calcified matrix is more rounded, basophilic, and often acellular, morphologic features that have been likened to “cementum.” The low matrix to stromal ratio is typical for COF. More about this image found in CEMENTO-OSSIFYING FIBROMA The calcified matrix is more rounded, basophilic...

VERRUCOUS CARCINOMA Figure 6-52 VERRUCOUS CARCINOMA Low-power view of a superficial verrucous carcinoma with the classic features of extensive hyperkeratosis, marked undulation, thickening of the epithelium, and pushing stromal interface with marked submucosal chronic inflammation. More about this image found in VERRUCOUS CARCINOMA Low-power view of a superficial verrucous carcinoma wi...

SOLID ADENOID CYSTIC CARCINOMA Figure 6-87 SOLID ADENOID CYSTIC CARCINOMA Solid adenoid cystic carcinoma consists of very well-circumscribed “cannon ball”-like nests of basaloid cells with minimal or no stromal material. More about this image found in SOLID ADENOID CYSTIC CARCINOMA Solid adenoid cystic carcinoma consists of ...

INTERMEDIATE-GRADE CHONDROSARCOMA Figure 6-105 INTERMEDIATE-GRADE CHONDROSARCOMA Intermediate-grade (grade 2) chondrosarcoma shows myxoid stromal changes and increased cellularity, spindle cell changes, nuclear pleomorphism, and clustering of tumor cells. More about this image found in INTERMEDIATE-GRADE CHONDROSARCOMA Intermediate-grade (grade 2) chondrosarc...

OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA Figure 2-10 OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA High-power view shows a nonkeratinizing SCC with hyperchromatic nuclei, no maturing squamous differentiation, and smooth nest borders with no stromal reaction. More about this image found in OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA High-power view show...

MYXOID VOCAL CORD NODULE/POLYP Figure 6-7 MYXOID VOCAL CORD NODULE/POLYP This myxoid vocal cord nodule/polyp consists of a sheet of myxoid and vascular stromal material, lined by squamous epithelium with mild hyperkeratosis. More about this image found in MYXOID VOCAL CORD NODULE/POLYP This myxoid vocal cord nodule/polyp consist...

LIPOMA Figure 7-42 LIPOMA A: Low-power view of a conventional lipoma shows a mass of mature adipose tissue with regularly sized cells and no significant stromal fibrous component. B: On medium power, the regularly sized adipocytes are appreciated. More about this image found in LIPOMA A: Low-power view of a conventional lipoma shows a mass of mature a...

OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA Figure 2-11 OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA Occasionally, nonkeratinizing SCCs, particularly larger, more deeply infiltrative ones, have extensive stromal fibrosis, giving the tumors a “desmoplastic” appearance. More about this image found in OROPHARYNGEAL NONKERATINIZING SQUAMOUS CELL CARCINOMA Occasionally, nonker...