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POLYMORPHOUS ADENOCARCINOMA Figure 4-70 POLYMORPHOUS ADENOCARCINOMA A: Unencapsulated palatal tumor with multiple histologic patterns including cribriform, tubular, and trabecular. B: The tumor cells often show a streaming or single-file cell infiltration along the periphery of the tumor. C More about this image found in POLYMORPHOUS ADENOCARCINOMA A: Unencapsulated palatal tumor with multiple ...

GLANDULAR ODONTOGENIC CYST Figure 5-167 GLANDULAR ODONTOGENIC CYST Variable thickness of the lining and multiple cystic compartments. More about this image found in GLANDULAR ODONTOGENIC CYST Variable thickness of the lining and multiple c...

AURICULAR PSEUDOCYST Figure 8-20 AURICULAR PSEUDOCYST A: Multiple hemorrhagic cystic spaces are noted without an epithelial lining. B: Cyst fluid fills the cavity within degenerated cartilage. C: Reactive fibrosis is seen in the center of this cartilage plate. D: Hemorrhage and degenerated More about this image found in AURICULAR PSEUDOCYST A: Multiple hemorrhagic cystic spaces are noted witho...

EPITHELIOID HEMANGIOMA Figure 8-23 EPITHELIOID HEMANGIOMA A: Multiple papules have coalesced into a larger nodule distorting the scaphoid. (Courtesy of Dr. M. Gurlanick, Woodland Hills, CA) B: Computerized tomography (CT) demonstrates a soft tissue mass involving the ear and preauricular region More about this image found in EPITHELIOID HEMANGIOMA A: Multiple papules have coalesced into a larger no...

AURAL POLYP Figure 8-62 AURAL POLYP A: Multiple polypoid fragments of tissue filled with inflammatory cells. B: The fragments of tissue have associated epithelium as part of the normal middle ear mucosa. C: Epithelial invaginations are seen along with dense inflammation. D: Tunnel clusters More about this image found in AURAL POLYP A: Multiple polypoid fragments of tissue filled with inflammat...

MIDDLE EAR NEUROENDOCRINE TUMOR Figure 8-102 MIDDLE EAR NEUROENDOCRINE TUMOR A: Multiple patterns are seen in this tumor, where delicate nuclear chromatin is noted. B: A concurrent cholesteatoma is intimately associated with a MeNET. More about this image found in MIDDLE EAR NEUROENDOCRINE TUMOR A: Multiple patterns are seen in this tumo...

MIDDLE EAR NEUROENDOCRINE TUMOR Figure 8-97 MIDDLE EAR NEUROENDOCRINE TUMOR A,B: Both low-power images illustrate the multiple of patterns seen in these tumors. More about this image found in MIDDLE EAR NEUROENDOCRINE TUMOR A,B: Both low-power images illustrate the ...

PSAMMOMATOID OSSIFYING FIBROMA Figure 5-211 PSAMMOMATOID OSSIFYING FIBROMA At low power, the characteristic histologic features are multiple spherical ossicles in a hypercellular stroma composed of bland ovoid to spindle cells. More about this image found in PSAMMOMATOID OSSIFYING FIBROMA At low power, the characteristic histologic...

LOW-GRADE CHONDROSARCOMA Figure 6-103 LOW-GRADE CHONDROSARCOMA This low-grade chondrosarcoma is a circumscribed tumor with abnormally clustered chondrocytes, multiple per lacunae, in a densely basophilic nodular stroma. More about this image found in LOW-GRADE CHONDROSARCOMA This low-grade chondrosarcoma is a circumscribed ...

RECURRENT RESPIRATORY PAPILLOMATOSIS Figure 6-28 RECURRENT RESPIRATORY PAPILLOMATOSIS A gross laryngectomy specimen from a patient with multiple squamous papillomas/papillomatosis shows diffuse involvement of the true cords and supraglottic and subglottic larynx. More about this image found in RECURRENT RESPIRATORY PAPILLOMATOSIS A gross laryngectomy specimen from a ...

LIMITED ROSAI-DORFMAN DISEASE Figure 1-12 LIMITED ROSAI-DORFMAN DISEASE A: In an otherwise normal-appearing inflammatory polyp, there are multiple scattered aggregates of inflammatory cells. B: On high power, each of the nodules has the classic appearance of Rosai-Dorfman disease. More about this image found in LIMITED ROSAI-DORFMAN DISEASE A: In an otherwise normal-appearing inflamma...

POLYMORPHOUS ADENOCARCINOMA Figure 4-71 POLYMORPHOUS ADENOCARCINOMA A: Varied histology is a common finding. B: The neoplastic cells are separated by a characteristic slate blue-gray stroma. C: Multiple histologic patterns, including cribriform and tubular/trabecular, are common in this tumor More about this image found in POLYMORPHOUS ADENOCARCINOMA A: Varied histology is a common finding. B: T...

PLASMABLASTIC LYMPHOMA OF THE ORAL CAVITY Figure 4-78 PLASMABLASTIC LYMPHOMA OF THE ORAL CAVITY A: A 32-year-old HIV-positive male has multiple hemorrhagic and ulcerated swellings of the gingiva. B: The lymphoma contains an admixture of immunoblast-like cells and medium-sized to large More about this image found in PLASMABLASTIC LYMPHOMA OF THE ORAL CAVITY A: A 32-year-old HIV-positive ma...

lobules of fatty tumor contains scattered atypical stroma cells with hyperchromatic nuclei. D: High-power view of a fibrous septum shows multiple hyperchromatic stromal cells. More about this image found in WELL-DIFFERENTIATED LIPOSARCOMA A: Low-power view shows mature appearing a...

proliferation intimately associated with the surface epithelium, mimicking spindle squamous cell carcinoma. C: High-power view of the spindle cells demonstrate a fascicular growth pattern with marked nuclear pleomorphism. D: Epithelioid and round cells with multiple atypical nuclei. (Courtesy of Dr. R. Foss More about this image found in RHABDOMYOSARCOMA WITH TFCP1 REARRANGEMENT (RMS-TFCP2) A: ...