User contributions
19 August 2013
File:IPLab3BrainInfarction9.jpg
This is a photomicrograph of the edge of the infarct. Note the gitter cells, gemistocytic astrocytes, and some hemosiderin-laden macrophages (arrows).
File:IPLab3BrainInfarction8.jpg
This is a high-power photomicrograph of gitter cells (arrows).
File:IPLab3BrainInfarction7.jpg
This is a photomicrograph of the edge of the infarct. The macrophages that are full of brain tissue (“gitter cells”) are at the top of the image (arrows) and the brain parenchyma containing gemistocytic astrocytes is at the bottom.
File:IPLab3BrainInfarction6.jpg
This is a photomicrograph of brain tissue adjacent to the area of infarction. There are numerous activated gemistocytic astrocytes (arrows).
File:IPLab3BrainInfarction5.jpg
This is a higher-power photomicrograph of the previous image showing that the inflammatory cells (arrows) are primarily macrophages and microglia which have phagocytosed the dead brain tissue.
File:IPLab3BrainInfarction4.jpg
This is a photomicrograph of the edge of the infarct. Note the numerous inflammatory cells in the brain parenchyma and adjacent to the remaining brain tissue (arrows).
File:IPLab3BrainInfarction3.jpg
This is a low-power photomicrograph of brain at the edge of the infarct. Note the loss of brain parenchyma (arrows).
File:IPLab3BrainInfarction2.jpg
This is a gross photograph of a cross-section of brain demonstrating the areas of infarction (arrows).
File:IPLab3BrainInfarction1.jpg
This is a gross photograph of the brain which contains two areas of infarction (arrows).
IPLab:Lab 3:Chronic Peptic Ulcer
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab3ChronicPepticUlcer1.jpg|This is a gross photograph of a stomach containing an ulcer. Note the folded pink gast..."
File:IPLab3ChronicPepticUlcer11.jpg
This is a trichrome-stained section of tissue demonstrating fibrous connective tissue scar formation (blue color) in this lesion. The surface of the ulcer is at the left-hand side of the image. There is a layer of inflammatory cells and RBCs on the sur...
File:IPLab3ChronicPepticUlcer10.jpg
This is a photomicrograph of the serosal surface (1) from a section of stomach near the ulcer. Note that the inflammatory reaction extends out to the serosa.
File:IPLab3ChronicPepticUlcer9.jpg
This high-power photomicrograph demonstrates the granulation tissue within the base of the ulcer.
File:IPLab3ChronicPepticUlcer8.jpg
This low-power photomicrograph demonstrates the healing reaction in the base of this ulcer. The base of the ulcer is at the left-hand side of the image and the serosal surface is at the right. Note the fibrous connective tissue within the wall of the s...
File:IPLab3ChronicPepticUlcer7.jpg
This high-power photomicrograph of the ulcer base demonstrates plump, activated fibroblasts and endothelial cells (arrows) within the granulation tissue that makes up the base of the ulcer. There are inflammatory cells (primarily lymphocytes) within th...
File:IPLab3ChronicPepticUlcer6.jpg
This high-power photomicrograph of the ulcer base (arrows) demonstrates the lack of epithelium and the exuberant inflammatory response (1) consisting of primarily of fibrin (and adherent gastric secretions) and PMNs. The surface of the ulcer bed is cov...
File:IPLab3ChronicPepticUlcer5.jpg
This is a medium-power photomicrograph of the base of the ulcer with the fibrinopurulent membrane (1) overlying the ulcerated surface. The ulcerated surface contains granulation tissue and inflammatory cells (2).
File:IPLab3ChronicPepticUlcer4.jpg
This is a photomicrograph of the margin of the ulcer. Note the intact epithelium on the right side of the section (1) and the ulcerated region without epithelium on the left (2). There are numerous inflammatory cells within this tissue.
File:IPLab3ChronicPepticUlcer3.jpg
This is a low-power photomicrograph of the transected ulcer. The blue cells on the right hand side of this section are the normal gastric epithelial cells of the mucosa (1). Note the absence of any epithelial cells within the crater of the ulcer (2).
File:IPLab3ChronicPepticUlcer2.jpg
This is a gross photograph of the ulcer after it has been transected. The edge of the mucosa (1) is better appreciated in this image. Note the thick, fatty tissue (2) which makes up the base of this ulcer (3).
File:IPLab3ChronicPepticUlcer1.jpg
This is a gross photograph of a stomach containing an ulcer. Note the folded pink gastric mucosa that extends up to the edge of the ulcer (arrows).
IPLab:Lab 3:Fibrinous Pericarditis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab3FibrinousPericarditis1.jpg|This is a gross photograph of a heart illustrating acute fibrinous pericarditis. Th..."
File:IPLab3FibrinousPericarditis5.jpg
This high-power photomicrograph demonstrates fibrin (red amorphous material) on the surface of the pericardium (1). Note the reactive mesothelial cells on the surface of the pericardium (arrows) and the inflammatory cells within the pericardial tissue.
File:IPLab3FibrinousPericarditis4.jpg
This is a higher-power photomicrograph demonstrating fronds of fibrin (arrows) projecting from the surface of the pericardium.
File:IPLab3FibrinousPericarditis3.jpg
This low-power photomicrograph illustrates the dark-red-staining fibrin deposits on the inner surface (arrows). This pericardium is much thicker than normal and there are numerous inflammatory cells within the pericardial tissue.
File:IPLab3FibrinousPericarditis2.jpg
This is another view of the heart with the pericardium removed. Most of the epicardial surface is covered with fibrinous deposits as in the previous slide. There are a few glistening areas of exposed normal epicardial tissue.
File:IPLab3FibrinousPericarditis1.jpg
This is a gross photograph of a heart illustrating acute fibrinous pericarditis. The pericardium on this heart has been reflected back (arrows). The surface of the heart is rough due to the deposition of fibrin on the epicardial surface of the heart an...
IPLab:Lab 3:Foreign Body Granuloma
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IPLab:Lab 3:Foreign Body Granuloma
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab3ForeignBodyGranuloma1.jpg|This is a low-power photomicrograph of lung and pleura. There is some hemorrhage in ..."
File:IPLab3ForeignBodyGranuloma5.jpg
This is a fully-polarized view of lung showing numerous birefringent particles.
File:IPLab3ForeignBodyGranuloma4.jpg
This is a photomicrograph of lung taken under light that is partially polarized to demonstrate the birefringent particles within the granulomas (1). Also, at this magnification one can better appreciate that these granulomas are adjacent to blood vesse...
File:IPLab3ForeignBodyGranuloma3.jpg
A higher-power photomicrograph of these granulomas reveals that they surround blood vessels (note the red blood cells within the lumen) (arrow).
File:IPLab3ForeignBodyGranuloma2.jpg
This higher-power photomicrograph demonstrates the small focal cellular lesions (arrows) found throughout the parenchyma of the lung.
File:IPLab3ForeignBodyGranuloma1.jpg
This is a low-power photomicrograph of lung and pleura. There is some hemorrhage in this tissue (arrows), probably the result of surgery or the gunshot wounds.
IPLab:Lab 3:Tuberculosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab3Tuberculosis1.jpg|This is a gross photograph of a lung containing a nodular lesion at the lung apex (arrows). ..."
File:IPLab3Tuberculosis5.jpg
This high-power photomicrograph of a tuberculosis granuloma demonstrates acid-fast bacilli (arrows).
File:IPLab3Tuberculosis4.jpg
This is a high-power photomicrograph of a granuloma. Note the necrotic core on the right (1), epithelioid macrophages (2), and Langhans’ type giant cells (3) at the periphery of the granuloma. Note also the small lymphocytes characterized by their di...
File:IPLab3Tuberculosis3.jpg
This is a photomicrograph of a tuberculosis granuloma. Note the central core of caseation necrosis (1) encircled by a rim of epithelioid macrophages and lymphocytes (2). Langhans’ type multinucleated giant cells are also present although they are dif...
File:IPLab3Tuberculosis2.jpg
This low-power photomicrograph of a section of lung reveals multiple large nodules (1) with pale eosinophilic centers surrounded by a rim of blue-staining nuclei. In addition to the large nodules, there are several smaller nodules throughout the slide ...
File:IPLab3Tuberculosis1.jpg
This is a gross photograph of a lung containing a nodular lesion at the lung apex (arrows). Note that the lesion appears solid and has a whitish coloration indicating considerable fibrous connective tissue. This is a healed granuloma due to primary tub...
IPLab:Lab 2:Hypertrophy
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+26
IPLab:Lab 2:Additional Resources
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+26
IPLab:Lab 3:Sarcoidosis
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+28
IPLab:Lab 3:Bronchopneumonia
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+28
IPLab:Lab 3:Lobar Pneumonia
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+28
IPLab:Lab 3:Acute Appendicitis
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IPLab:Lab 3:Acute Appendicitis
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IPLab:Lab 3:Sarcoidosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab3Sarcoidosis1.jpg|This is a low-power photomicrograph of a lymph node. Note the rather pale-pink color of the t..."
File:IPLab3Sarcoidosis6.jpg
This is a higher-power photomicrograph of an asteroid body (arrow) inside of a multinucleated giant cell.
File:IPLab3Sarcoidosis5.jpg
This is a photomicrograph of a multinucleated giant cell (1). In the center of this foreign body-containing giant cell there is a small asteroid body (2). There is no functional significance to this asteroid body.