Search Results for spindle

SPINDLE CELL AMELOBLASTIC CARCINOMA Figure 5-15 SPINDLE CELL AMELOBLASTIC CARCINOMA The distinct spindle cell morphology is seen. More about this image found in SPINDLE CELL AMELOBLASTIC CARCINOMA The distinct spindle cell morphology i...

SPINDLE CELL SQUAMOUS CELL CARCINOMA Figure 6-65 SPINDLE CELL SQUAMOUS CELL CARCINOMA The spindle cell carcinoma is immunohistochemically positive for CK5/6 (A) and p40 (B), and shows an elevated Ki-67 index (C). More about this image found in SPINDLE CELL SQUAMOUS CELL CARCINOMA The spindle cell carcinoma is immunoh...

SPINDLE CELL/PLEOMORPHIC LIPOMA Figure 7-43 SPINDLE CELL/PLEOMORPHIC LIPOMA A: Spindle cell lipoma consists of bland spindle cells in a collagenous stroma and varying amounts of mature adipose tissue. B: In pleomorphic lipoma, which is a variant of spindle cell lipoma, many of the stromal cells More about this image found in SPINDLE CELL/PLEOMORPHIC LIPOMA A: Spindle cell lipoma consists of bland s...

NEUROFIBROMA Figure 1-87 NEUROFIBROMA A: A subepithelial spindle cell proliferation with background stroma. B: Irregular, interlacing bundles of spindled cells have wavy nuclei. C: Small nerve twigs are noted within the background collagenized stroma. D: Interlacing bundles of nerve tissue More about this image found in NEUROFIBROMA A: A subepithelial spindle cell proliferation with background...

SOLITARY FIBROUS TUMOR Figure 1-91 SOLITARY FIBROUS TUMOR A: An unencapsulated spindle cell tumor is below intact respiratory epithelium. B: A haphazard to storiform spindle cell proliferation with numerous patulous, staghorntype vessels. C: Haphazard architecture with slit-like vessels. D More about this image found in SOLITARY FIBROUS TUMOR A: An unencapsulated spindle cell tumor is below in...

MYCOBACTERIAL SPINDLE CELL TUMOR Figure 1-96 MYCOBACTERIAL SPINDLE CELL TUMOR A: Low power shows an intact surface with a spindled cell proliferation. B: The surface is ulcerated, with spindled cells noted in the stroma. C: The lesional histiocytes have a spindled morphology, with inflammatory More about this image found in MYCOBACTERIAL SPINDLE CELL TUMOR A: Low power shows an intact surface with...

MYCOBACTERIAL SPINDLE CELL TUMOR Figure 1-97 MYCOBACTERIAL SPINDLE CELL TUMOR A: The cytoplasm of the histiocytes shows lightly eosinophilic structures. B: Innumerable acid-fast bacilli (AFB) fill the cytoplasm of the histiocytes. C: Beaded organisms are seen at higher power. (Courtesy of Dr More about this image found in MYCOBACTERIAL SPINDLE CELL TUMOR A: The cytoplasm of the histiocytes shows...

SPINDLE CELL/SCLEROSING RHABDOMYOSARCOMA Figure 1-121 SPINDLE CELL/SCLEROSING RHABDOMYOSARCOMA A,B: Eosinophilic tumor cells with mildly pleomorphic nuclei are arranged as alternating fascicles, resembling leiomyosarcoma. C,D: Desmin is strongly positive (C), and myogenin is typically focal (D). More about this image found in SPINDLE CELL/SCLEROSING RHABDOMYOSARCOMA A,B: Eosinophilic tumor cells wit...

SPINDLE SQUAMOUS CELL CARCINOMA Figure 4-13 SPINDLE SQUAMOUS CELL CARCINOMA The tumor presents as a polypoid exophytic mass. More about this image found in SPINDLE SQUAMOUS CELL CARCINOMA The tumor presents as a polypoid exophytic...

SPINDLE SQUAMOUS CELL CARCINOMA Figure 4-14 SPINDLE SQUAMOUS CELL CARCINOMA A: Tumor is present beneath the ulcerated epithelium. B: Fascicular tumor growth. C: Spindle-shaped cells with nuclear pleomorphism. D: Pancytokeratin highlights the epithelial cells in the stroma. More about this image found in SPINDLE SQUAMOUS CELL CARCINOMA A: Tumor is present beneath the ulcerated ...

SCHWANNOMA Figure 4-44 SCHWANNOMA A: Encapsulated spindle cell lesion composed of cellular (Antonia A) and hypocellular (Antoni B) areas. B: Nuclear palisading with Verocay bodies. C: Irregular vascular channels have thickened hyaline walls and luminal thrombi. D: Myxoid change More about this image found in SCHWANNOMA A: Encapsulated spindle cell lesion composed of cellular (Anton...

NEUROFIBROMA Figure 4-45 NEUROFIBROMA A: The unencapsulated lesion is composed of spindle cells with a myxoid stroma. B: Buckled or wavy nuclei are within collagenous stroma with myxoid change. C: The plexiform variant shows numerous nerves with a multinodular and serpentine growth pattern. D More about this image found in NEUROFIBROMA A: The unencapsulated lesion is composed of spindle cells wit...

FIBROUS DYSPLASIA Figure 5-206 FIBROUS DYSPLASIA A: Woven bone arises from the spindle cell background. B: With maturation, the woven bone is replaced with lamellar bone. Prominent resting and reversal lines are noted. More about this image found in FIBROUS DYSPLASIA A: Woven bone arises from the spindle cell background. ...

LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA Figure 6-63 LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA A: Endoscopic specimen shows an exophytic polypoid mass. B: A large polypoid mass involves the glottis. More about this image found in LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA A: Endoscopic specimen show...

LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA Figure 6-64 LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA A: Low-magnification view of an exophytic lesion with surface ulceration and atypical cells within a myxoid stroma. B,C: Markedly atypical spindled (B) and stellate (C) cells More about this image found in LARYNGEAL SPINDLE CELL SQUAMOUS CELL CARCINOMA A: Low-magnification view o...

ATYPICAL FIBROXANTHOMA Figure 8-29 ATYPICAL FIBROXANTHOMA A: A hypercellular dermal proliferation of spindle cells extends up to the epidermis. B: There is a thin zone of separation between the unremarkable epidermis and the profoundly pleomorphic stellate to spindled neoplastic cells. C More about this image found in ATYPICAL FIBROXANTHOMA A: A hypercellular dermal proliferation of spindle ...

SQUAMOUS CELL CARCINOMA Figure 8-50 SQUAMOUS CELL CARCINOMA A: A spindle cell (sarcomatoid) SCC shows fascicles of spindled neoplastic cells with moderate pleomorphism. B: Strong pancytokeratin staining highlights the neoplastic cells. C: p40 shows a strong nuclear reaction in the neoplastic More about this image found in SQUAMOUS CELL CARCINOMA A: A spindle cell (sarcomatoid) SCC shows fascicle...

NEUROFIBROMA Figure 1-88 NEUROFIBROMA A: Spindled Schwann cells and fibroblasts with mast cells. B: The background mucopolysaccharide stroma separates the wavy, undulating pointy nuclei within the spindled cells. More about this image found in NEUROFIBROMA A: Spindled Schwann cells and fibroblasts with mast cells. B...

SOLITARY FIBROUS TUMOR Figure 1-93 SOLITARY FIBROUS TUMOR A,B: The spindled cells are nondescript, with keloid-like collagen (A) to more haphazard collagen (B). C: Dense collagen is noted adjacent to minor mucoserous glands, entrapped by the process. D: Entrapped, but unaffected minor More about this image found in SOLITARY FIBROUS TUMOR A,B: The spindled cells are nondescript, with keloi...

EPITHELIOID HEMANGIOENDOTHELIOMA Figure 1-115 EPITHELIOID HEMANGIOENDOTHELIOMA Modestly atypical spindled and epithelioid cells are set in a fibromyxoid stroma. Some of the cells exhibit primitive vessel formation in the form of cytoplasmic vacuoles, some of which contain red blood cells. Inset More about this image found in EPITHELIOID HEMANGIOENDOTHELIOMA Modestly atypical spindled and epithelioi...