Search Results for histology

SMARCB1-DEFICIENT SINONASAL CARCINOMA, SUBTYPE HISTOLOGY Figure 1-38 SMARCB1-DEFICIENT SINONASAL CARCINOMA, SUBTYPE HISTOLOGY A: This tumor type may show glandular and yolk sac-like differentiation. B: Rarely, spindle cell change is present. More about this image found in SMARCB1-DEFICIENT SINONASAL CARCINOMA, SUBTYPE HISTOLOGY A: This tumor typ...

HISTOLOGY OF THE ORAL CAVITY Figure 4-2 HISTOLOGY OF THE ORAL CAVITY A: Nonkeratinized epithelium from the buccal mucosa. B: Parakeratinized epithelium from the gingiva. More about this image found in HISTOLOGY OF THE ORAL CAVITY A: Nonkeratinized epithelium from the buccal ...

HISTOLOGY OF THE ORAL CAVITY Figure 4-3 HISTOLOGY OF THE ORAL CAVITY A: Unencapsulated lobules of mucous glands and associated ducts. B: Von Ebner glands are serous glands located in the posterior tongue near the circumvallate papillae. C: Filiform papillae, the most numerous of the tongue More about this image found in HISTOLOGY OF THE ORAL CAVITY A: Unencapsulated lobules of mucous glands an...

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...

HISTOLOGY OF THE HYPOPHARYNX Figure 6-1 HISTOLOGY OF THE HYPOPHARYNX The mucosa of the hypopharynx is lined by stratified squamous epithelium of variable thickness. More about this image found in HISTOLOGY OF THE HYPOPHARYNX The mucosa of the hypopharynx is lined by str...

HISTOLOGY OF THE LARYNX AND TRACHEA Figure 6-3 HISTOLOGY OF THE LARYNX AND TRACHEA A: The loose fibromyxoid lamina propria below the squamous epithelium of the true vocal cord is devoid of seromucinous glands. B: High-magnification view shows the sparsely cellular true vocal cord lamina propria More about this image found in HISTOLOGY OF THE LARYNX AND TRACHEA A: The loose fibromyxoid lamina propri...

SECRETORY CARCINOMA Figure 4-74 SECRETORY CARCINOMA A: There are many histologic patterns, with microcystic features predominating. B: The microcystic pattern is composed of monotonous cells arranged around bluish to eosinophilic bubbly secretory material that is PAS positive. C: The solid More about this image found in SECRETORY CARCINOMA A: There are many histologic patterns, with microcysti...

HISTOLOGIC SPECTRUM OF PIOC Figure 5-19 HISTOLOGIC SPECTRUM OF PIOC Lesions are most commonly keratinizing and well differentiated (A), but occasionally they are nonkeratinizing (B), and some are undifferentiated (C). More about this image found in HISTOLOGIC SPECTRUM OF PIOC Lesions are most commonly keratinizing and wel...

ODONTOGENIC MYXOMA Figure 5-102 ODONTOGENIC MYXOMA Typical histologic features of hypocellular mesenchymal cells set in a myxoid stroma with delicate collagen fibrils. More about this image found in ODONTOGENIC MYXOMA Typical histologic features of hypocellular mesenchymal...

HYPERPLASTIC DENTAL FOLLICLES Figure 5-105 HYPERPLASTIC DENTAL FOLLICLES There is a remarkable histologic similarity to odontogenic myxomas (inset) to hyperplastic dental follicles (arrows). More about this image found in HYPERPLASTIC DENTAL FOLLICLES There is a remarkable histologic similarity ...

DENTIGEROUS CYST Figure 5-142 DENTIGEROUS CYST A,B: Characteristic histologic features of dentigerous cyst with a nonkeratinized stratified squamous epithelial lining, without basal cell palisading or hyperchromasia. More about this image found in DENTIGEROUS CYST A,B: Characteristic histologic features of dentigerous cy...

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...

CENTRAL ODONTOGENIC FIBROMA Figure 5-93 CENTRAL ODONTOGENIC FIBROMA Pericoronal biopsies from patients with odontogenic fibroma hamartoma syndrome appear similar to COF histologically. More about this image found in CENTRAL ODONTOGENIC FIBROMA Pericoronal biopsies from patients with odonto...

DENTAL PAPILLA OF DEVELOPING TEETH Figure 5-106 DENTAL PAPILLA OF DEVELOPING TEETH Anatomically distinct but dental papillas (arrows, gross and inset) show remarkable histologic similarity to odontogenic myxomas. More about this image found in DENTAL PAPILLA OF DEVELOPING TEETH Anatomically distinct but dental papill...

ACCESSORY TRAGUS Figure 8-12 ACCESSORY TRAGUS A: This patient has several accessory tragi anterior to the ear. B: Histologically, a thin plate of cartilage is surrounded by adipose tissue with intact overlying skin. More about this image found in ACCESSORY TRAGUS A: This patient has several accessory tragi anterior to t...

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-...

ADULT-TYPE RHABDOMYOMA Figure 6-95 ADULT-TYPE RHABDOMYOMA At high magnification, with the condenser turned down, the striations in the tumor cells, just as in normal adult skeletal muscle, are seen. This is a pathognomonic histologic feature. More about this image found in ADULT-TYPE RHABDOMYOMA At high magnification, with the condenser turned do...

CEMENTO-OSSIFYING FIBROMA Figure 5-121 CEMENTO-OSSIFYING FIBROMA Early lesion in which bone is immature, with some osteoblastic rimming and large entrapped osteocytes. The calcified product is bone. This pattern typically includes fibrous dysplasia in the histologic differential diagnosis. More about this image found in CEMENTO-OSSIFYING FIBROMA Early lesion in which bone is immature, with som...

SCHWANNOMA Figure 8-114 SCHWANNOMA A: This MRI shows a hyperintense mass on T2-weighted image (white arrow) adjacent to the cerebellum, representing a schwannoma histologically. B: An intraoperative photograph of a schwannoma with a yellow appearance. (Courtesy of Dr. Z. Li, Changsha, China) More about this image found in SCHWANNOMA A: This MRI shows a hyperintense mass on T2-weighted image (whi...

KERATINIZING NASOPHARYNGEAL CARCINOMA Figure 3-11 KERATINIZING NASOPHARYNGEAL CARCINOMA A,B: Keratinizing nasopharyngeal carcinomas are often Epstein-Barr virus (EBV) negative and show similar histologic features to keratinizing squamous cell carcinomas in other head and neck anatomic sites. More about this image found in KERATINIZING NASOPHARYNGEAL CARCINOMA A,B: Keratinizing nasopharyngeal car...