Search Results for lobular

LOBULAR CAPILLARY HEMANGIOMA Figure 1-67 LOBULAR CAPILLARY HEMANGIOMA A: An ulcerated mass is just inside the nasal vestibule. B: An ulcerated polypoid mass is seen on endoscopy within the nasal cavity. (Courtesy of Dr. G. G. Calzada, San Diego, CA) More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: An ulcerated mass is just inside the nasal...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-68 LOBULAR CAPILLARY HEMANGIOMA CT shows a soft tissue density mass (white arrow) in the anterior nose, adjacent to Little area in sagittal (A) and axial (B) views. More about this image found in LOBULAR CAPILLARY HEMANGIOMA CT shows a soft tissue density mass (white ar...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-69 LOBULAR CAPILLARY HEMANGIOMA Polypoid masses on low power. A: Surface ulceration with a collarette of metaplastic squamous epithelium. B: Lobules of capillaries within a fibrous stroma. C: Extensively hyalinized tumor with myxoid change and surface More about this image found in LOBULAR CAPILLARY HEMANGIOMA Polypoid masses on low power. A: Surface ulc...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-70 LOBULAR CAPILLARY HEMANGIOMA A: Tight lobules with central veins are below an intact squamous epithelium. B: Lobules of capillary are separated by stroma below an ulcerated surface. C: Loose lobules of vessels surround a central vessel. D: Compressed More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: Tight lobules with central veins are below...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-71 LOBULAR CAPILLARY HEMANGIOMA A: A central vessel is surrounded by numerous capillaries. B: The central vessel is open, surrounded by capillaries and pericytes. C: The vessels that surround the central vessel are slit-like to closed. D: The endothelium More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: A central vessel is surrounded by numerous...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-72 LOBULAR CAPILLARY HEMANGIOMA A: Numerous vessels are noted, some with erythrocytes and some with serum. B: Open, slit-like vessels are seen below an intact squamous epithelium. C: The endothelial cells are unremarkable, surrounded by numerous More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: Numerous vessels are noted, some with eryt...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-73 LOBULAR CAPILLARY HEMANGIOMA A: Relatively high cellularity is seen around the central vessel. B: Numerous vascular spaces are noted in this case, without a single central vessel. C: Edematous degeneration creates an open, fenestrated appearance. D More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: Relatively high cellularity is seen around...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-74 LOBULAR CAPILLARY HEMANGIOMA A: The hyalinized and myxoid pattern is uncharacteristic. Central vessels are present (A), but are more difficult to see. B: Hyalinized and myxoid stroma is seen between compressed vessels. C: Central vessels are associated More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: The hyalinized and myxoid pattern is uncha...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-75 LOBULAR CAPILLARY HEMANGIOMA A: There is marked acute inflammation at the surface, part of ulceration. This process expands partially into the underlying tumor. B: The fibrinoid necrosis is only present at the surface, without extension More about this image found in LOBULAR CAPILLARY HEMANGIOMA A: There is marked acute inflammation at the ...

LOBULAR CAPILLARY HEMANGIOMA Figure 1-76 LOBULAR CAPILLARY HEMANGIOMA The vessels are highlighted with CD31 (A) or CD34 (B), the latter highlighting a central vessel perfectly. More about this image found in LOBULAR CAPILLARY HEMANGIOMA The vessels are highlighted with CD31 (A) or ...

INFLAMMATORY SINONASAL POLYPS VERSUS LOBULAR CAPILLARY HEMANGIOMA Figure 1-77 INFLAMMATORY SINONASAL POLYPS VERSUS LOBULAR CAPILLARY HEMANGIOMA A: Edematous change can simulate a vascular neoplasm. B: Numerous open channels are seen in this degenerating polyp. C: Degeneration is associated More about this image found in INFLAMMATORY SINONASAL POLYPS VERSUS LOBULAR CAPILLARY HEMANGIOMA A: Edema...

MENINGIOMA Figure 1-159 MENINGIOMA A: A polyp has an intact epithelium with a lobular neoplastic proliferation in the stroma. B: The epithelium is intact, overlying a meningothelial proliferation. C: The neoplastic cells invade around the minor mucoserous glands (white arrow), and blend More about this image found in MENINGIOMA A: A polyp has an intact epithelium with a lobular neoplastic p...

NECROTIZING SIALOMETAPLASIA Figure 4-75 NECROTIZING SIALOMETAPLASIA Pseudoepitheliomatous hyperplasia in necrotizing sialometaplasia mimics well-differentiated squamous carcinoma; however, the lobular configuration (arrows) of the glands is preserved. More about this image found in NECROTIZING SIALOMETAPLASIA Pseudoepitheliomatous hyperplasia in necrotizi...

PYOGENIC GRANULOMA Figure 4-53 PYOGENIC GRANULOMA A: Exophytic growth on the maxillary gingiva. B: Polypoid, ulcerated epithelium overlying a cellular and vascular proliferation. C: Lobular growth. D: Cellular vascular proliferation. More about this image found in PYOGENIC GRANULOMA A: Exophytic growth on the maxillary gingiva. B: Polyp...