Search Results for invasive

OROPHARYNGEAL KERATINIZING SQUAMOUS CELL CARCINOMA Figure 2-24 OROPHARYNGEAL KERATINIZING SQUAMOUS CELL CARCINOMA Invasive well-differentiated SCC, keratinizing type, with large nests with abundant central keratin formation. More about this image found in OROPHARYNGEAL KERATINIZING SQUAMOUS CELL CARCINOMA Invasive well-different...

MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA Figure 6-46 MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA SCC in situ of the true cord with very small foci of early invasive keratinizing-type carcinoma. More about this image found in MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA SCC in situ of the true cord wi...

MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA Figure 6-47 MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA Small nests in the true cord tumor with superficial (early) invasion of the submucosa. More about this image found in MINIMALLY-INVASIVE SQUAMOUS CELL CARCINOMA Small nests in the true cord tu...

PAPILLARY SQUAMOUS CELL CARCINOMA Figure 6-62 PAPILLARY SQUAMOUS CELL CARCINOMA Invasive growth at the base of the papillary surface tumor mass is evident in this low-power view with angulated nests of SCC in a fibrous stroma. More about this image found in PAPILLARY SQUAMOUS CELL CARCINOMA Invasive growth at the base of the papil...

NK/T-CELL LYMPHOMA Figure 1-178 NK/T-CELL LYMPHOMA Lymphovascular destruction and invasion are easily identified in most cases. A: A large vessel with a smooth muscle wall (black arrow) is destroyed by the neoplastic infiltrate. Geographic necrosis is easily identified (left upper). B More about this image found in NK/T-CELL LYMPHOMA Lymphovascular destruction and invasion are easily iden...

ORAL SQUAMOUS CELL CARCINOMA Figure 4-9 ORAL SQUAMOUS CELL CARCINOMA Worst pattern of invasion: widely dispersed tumor with tumor satellites more than 1 mm from the nearest tumor island (arrow). More about this image found in ORAL SQUAMOUS CELL CARCINOMA Worst pattern of invasion: widely dispersed t...

MANDIBULAR PIOC Figure 5-20 MANDIBULAR PIOC Perineural invasion of the inferior alveolar nerve. More about this image found in MANDIBULAR PIOC Perineural invasion of the inferior alveolar nerve.

OSTEOSARCOMA Figure 5-187 OSTEOSARCOMA Invasion along periodontal ligament produces the characteristic symmetrical widening of the periodontal ligament. More about this image found in OSTEOSARCOMA Invasion along periodontal ligament produces the characterist...

RHABDOMYOSARCOMA Figure 8-54 RHABDOMYOSARCOMA A: Cartilage invasion (upper left) by a fascicular arrangement of spindled neoplastic cells. B: A spindled cell proliferation predominates in a vague storiform pattern. C: Interlacing fascicles of spindled neoplastic cells with cleared cytoplasm More about this image found in RHABDOMYOSARCOMA A: Cartilage invasion (upper left) by a fascicular arrang...

CERUMINOUS ADENOCARCINOMA Figure 8-73 CERUMINOUS ADENOCARCINOMA A: A ceruminous adenoid cystic carcinoma with widely infiltrative growth, including positive surgical margins. B: Perineural invasion (white arrow) and tumor comedonecrosis (black arrow). C: Lymphovascular invasion (black arrows More about this image found in CERUMINOUS ADENOCARCINOMA A: A ceruminous adenoid cystic carcinoma with wi...

ORAL SQUAMOUS CELL CARCINOMA Figure 4-8 ORAL SQUAMOUS CELL CARCINOMA A: Perineural (black arrow) and intraneural (blue arrow) invasion is a poor prognostic factor in oral squamous cell carcinoma. This tumor has abundant desmoplastic stroma. B: Poorly differentiated squamous cell carcinoma More about this image found in ORAL SQUAMOUS CELL CARCINOMA A: Perineural (black arrow) and intraneural (...

the epithelium. These features make the distinction of in situ carcinoma from invasive carcinoma almost impossible, and more likely irrelevant, as tumors may spread without invasion beyond the basement membrane. (Modified from fig. 7 from Westra WH. The morphologic profile of HPV-related head and neck squamous More about this image found in UNIQUE ANATOMY OF THE RETICULATED TONSILLAR CRYPT EPITHELIUM There is an i...

MALIGNANT PARAGANGLIOMA Figure 7-10 MALIGNANT PARAGANGLIOMA It is uncommon to see vascular or perineural invasion, but this malignant paraganglioma shows neurotropism, tracking along the large nerves in the middle of the image. More about this image found in MALIGNANT PARAGANGLIOMA It is uncommon to see vascular or perineural invas...

BARNACULATE CARCINOMA Figure 4-28 BARNACULATE CARCINOMA A,B: Complex folding and invaginations of the epithelium with a mainly exophytic component, without obvious histopathologic evidence of invasion. C: Intraepithelial neutrophilic microabscesses with keratin pearl formation (arrow). D More about this image found in BARNACULATE CARCINOMA A,B: Complex folding and invaginations of the epithe...

LARYNGEAL SQUAMOUS CELL CARCINOMA Figure 6-42 LARYNGEAL SQUAMOUS CELL CARCINOMA Well-differentiated keratinizing-type SCC is often very mature so that the surface tumor and even the overtly invasive nests look like benign epithelium except for their markedly increased thickness, pattern More about this image found in LARYNGEAL SQUAMOUS CELL CARCINOMA Well-differentiated keratinizing-type SC...

without basal layer evidence of invasion. More about this image found in SQUAMOUS CELL CARCINOMA IN SITU A: The epithelium is replaced by full-thic...

. There seemingly is no invasive growth. This patient had proven cervical nodal metastases at the time of diagnosis, however. More about this image found in NONKERATINIZING OROPHARYNGEAL SQUAMOUS CELL CARCINOMA A: A small focus of ...

MELANOMA Figure 8-38 MELANOMA A: There is a highly atypical melanocytic proliferation at the dermal-epidermal junction, with a confluence of nests, extending into the superficial papillary dermis. B: Pigment incontinence is noted at the advancing edge of the invasive nests of melanocytes. Nests More about this image found in MELANOMA A: There is a highly atypical melanocytic proliferation at the de...

: Tumor cells infiltrate the native mucous glands and should not be interpreted as mucinous differentiation. D: Targetoid perineural invasion is a common finding in which the tumor cells create a whorled appearance around the nerve (black arrows). A slate blue-gray stroma is a characteristic finding. More about this image found in POLYMORPHOUS ADENOCARCINOMA A: Unencapsulated palatal tumor with multiple ...

CERUMINOUS ADENOID CYSTIC CARCINOMA (ACC) Figure 8-77 CERUMINOUS ADENOID CYSTIC CARCINOMA (ACC) A: Classic “Swiss cheese” punched-out appearance of ACC. B: Reduplicated basement membrane compresses the proliferation, while perineural invasion (black arrow) is noted immediately adjacent More about this image found in CERUMINOUS ADENOID CYSTIC CARCINOMA (ACC) A: Classic “Swiss cheese” punche...