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Date Name Thumbnail Size User Description Versions
18:06, 19 August 2013 IPLab6RA3.jpg (file) 62 KB Seung Park This is a high-power photomicrograph of the joint capsule with another granuloma surrounding a central area of fibrinoid necrosis (arrow). 1
18:06, 19 August 2013 IPLab6RA2.jpg (file) 97 KB Seung Park This is a medium-power photomicrograph of the joint capsule surrounding the metacarpal joints. Note the thickening of the capsule and the focal accumulation of inflammatory cells surrounding a central area of fibrinoid necrosis (arrow). 1
18:05, 19 August 2013 IPLab6RA1.jpg (file) 34 KB Seung Park This is a gross photograph of the patient's hands at autopsy. Note the swollen joints and the deforming arthritis. 1
17:54, 19 August 2013 IPLab5PolycysticKidney11.jpg (file) 68 KB Peter Anderson This is a higher-power photomicrograph of liver cyst. These cystic structures are lined by biliary epithelium. 1
17:54, 19 August 2013 IPLab5PolycysticKidney10.jpg (file) 61 KB Peter Anderson This is another photomicrograph of liver demonstrating the histologic appearance of these cysts. These cystic structures are associated with the biliary tree. 1
17:53, 19 August 2013 IPLab5PolycysticKidney9.jpg (file) 81 KB Peter Anderson This photomicrograph of liver demonstrates the histologic appearance of these cysts. 1
17:53, 19 August 2013 IPLab5PolycysticKidney8.jpg (file) 42 KB Peter Anderson This is a gross photograph of the liver from this patient. Multiple cysts can be seen on the surface of this liver (arrows). 1
17:52, 19 August 2013 IPLab5PolycysticKidney7.jpg (file) 66 KB Peter Anderson This high-power photomicrograph shows abnormal glomeruli (arrows) and some tubules. 1
17:52, 19 August 2013 IPLab5PolycysticKidney6.jpg (file) 66 KB Peter Anderson This is a higher-power photomicrograph of polycystic kidney showing the edge of a large cyst (1). In this section there are numerous tubules and dilated collecting ducts (2) that are filled with the same red proteinaceous material as the larger cysts. 1
17:51, 19 August 2013 IPLab5PolycysticKidney5.jpg (file) 53 KB Peter Anderson This is another low-power photomicrograph of an H&E-stained section from this polycystic kidney. Again note the large cystic structures (arrows)and the fibrous connective tissue throughout this section. 1
17:51, 19 August 2013 IPLab5PolycysticKidney4.jpg (file) 69 KB Peter Anderson This is a low-power photomicrograph of an H&E-stained section from this polycystic kidney. Note the large cystic structures (1), the few residual glomeruli (2), and the fibrous connective tissue throughout this section. 1
17:49, 19 August 2013 IPLab5PolycysticKidney3.jpg (file) 33 KB Peter Anderson This is a gross photograph of a cut section from one of these polycystic kidneys. Note that the renal parenchyma is almost completely replaced by cystic structures. 1
17:40, 19 August 2013 IPLab5PolycysticKidney2.jpg (file) 26 KB Peter Anderson This is a gross photograph of the kidneys from this case. Note that both kidneys contain multiple large cysts (arrows). 1
17:39, 19 August 2013 IPLab5PolycysticKidney1.jpg (file) 48 KB Peter Anderson This is a gross photograph of the kidneys from this case. Note that both kidneys contain multiple large cysts (arrows). 1
17:22, 19 August 2013 IPLab5Neurofibromatosis8.jpg (file) 59 KB Peter Anderson This is a high-power photomicrograph of the cells in the neurofibroma. 1
17:21, 19 August 2013 IPLab5Neurofibromatosis7.jpg (file) 74 KB Peter Anderson This higher-power photomicrograph of the neurofibroma shows more clearly the elongated cells (primarily Schwann cells) that make up this tumor. 1
17:21, 19 August 2013 IPLab5Neurofibromatosis6.jpg (file) 89 KB Peter Anderson This is a higher-power photomicrograph of the neurofibroma demonstrating the loose pattern of elongated cells making up the tumor mass. 1
17:20, 19 August 2013 IPLab5Neurofibromatosis5.jpg (file) 53 KB Peter Anderson This is a higher-power photomicrograph of the neurofibroma (1) with the overlying skin (2). 1
17:19, 19 August 2013 IPLab5Neurofibromatosis4.jpg (file) 48 KB Peter Anderson This is a low-power photomicrograph of a subcutaneous neurofibroma (1). Note the increased pigmentation in the skin (2). 1
17:19, 19 August 2013 IPLab5Neurofibromatosis3.jpg (file) 32 KB Peter Anderson This is a closer view of neurofibromas on the skin. 1
17:19, 19 August 2013 IPLab5Neurofibromatosis2.jpg (file) 40 KB Peter Anderson This is another view taken at autopsy demonstrating the neurofibromas. Some lesions can be seen as subcutaneous swellings (arrow) and others form pedunculated masses. Most are hyperpigmented. 1
17:18, 19 August 2013 IPLab5Neurofibromatosis1.jpg (file) 137 KB Peter Anderson This photograph, taken at autopsy, demonstrates the distribution of neurofibromas on the skin of this patient. 1
17:02, 19 August 2013 IPLab2FattyChange12.jpg (file) 49 KB Peter Anderson This is a cut surface of the same tissue seen in the previous slide. Note the marked nodular pattern. The paler-staining areas between the round nodules represent fibrous connective tissue. 1
17:01, 19 August 2013 IPLab4AtheromatousEmboli6.jpg (file) 62 KB Seung Park A mesenteric artery also had an atherosclerotic embolus. Again note the cholesterol clefts and thrombotic material that occlude this artery. 1
17:01, 19 August 2013 IPLab4AtheromatousEmboli5.jpg (file) 54 KB Seung Park This is another view of this vessel with an atherosclerotic embolus. Note the cholesterol clefts (1) and thrombotic material (2) that occlude this artery. 1
17:01, 19 August 2013 IPLab4AtheromatousEmboli4.jpg (file) 78 KB Seung Park This higher-power photomicrograph of one of the arcuate arteries reveals a cholesterol embolus. Note the needle-shaped space (arrow) within the lumen of this artery (arrow) which represents the space occupied by the cholesterol crystal that was dissolv... 1
17:00, 19 August 2013 IPLab4AtheromatousEmboli3.jpg (file) 34 KB Seung Park This is a low-power photomicrograph of kidney tissue. Several blood vessels can be identified at the corticomedullary junction (arrows). 1
17:00, 19 August 2013 IPLab2FattyChange11.jpg (file) 58 KB Peter Anderson This gross photograph of liver demonstrates severe nodular cirrhosis. Note the extensive scarring of the capsule and the nodular projections of tissue through the uncut capsule in this tissue. The green color is due to the accumulation of bile pigment. 1
17:00, 19 August 2013 IPLab4AtheromatousEmboli2.jpg (file) 53 KB Seung Park This is a closer view of the luminal surface of the aorta from the previous image. The rough, ulcerated surface and the thrombotic material can be easily seen in this image. 1
17:00, 19 August 2013 IPLab4AtheromatousEmboli1.jpg (file) 31 KB Seung Park This is a gross photograph of the aorta from this patient opened lengthwise with the luminal surface visible. Note the rough surface with ulcerations and adherent thrombotic material. There is a mild dilation (aneurysm) at the distal aorta just at the ... 1
16:59, 19 August 2013 IPLab2FattyChange9.jpg (file) 58 KB Peter Anderson This photomicrograph of the liver is from another patient with a history of alcohol use. There are some clear vacuoles indicating fat droplets (1) and there are numerous red-staining granular deposits within the cytoplasm of hepatocytes (2)--this is al... 1
16:58, 19 August 2013 IPLab2FattyChange8.jpg (file) 78 KB Peter Anderson An oil red O stain for fat was performed on a frozen section of this liver tissue. The red droplets represent fat in the tissue which is typical of fatty degeneration in the liver. By using frozen sections the tissues do not have to be dehydrated throu... 1
16:58, 19 August 2013 IPLab2FattyChange7.jpg (file) 65 KB Peter Anderson A high-power photomicrograph of the liver parenchyma shows that each individual liver cell is filled with a large, clear droplet which represents the space remaining after lipid was dissolved by the dehydration procedure used to embed the tissue. '''No... 1
16:57, 19 August 2013 IPLab2FattyChange6.jpg (file) 67 KB Peter Anderson Another view at the same power illustrates the proliferation of bile ducts in the interlobular and perichordal regions (arrows). 1
16:56, 19 August 2013 IPLab4SepticEmboli8.jpg (file) 43 KB Seung Park This is a high-powered photomicrograph of a myocardial abscess stained with a special tissue Gram stain (Brown & Brenn) to illustrate the colonies of bacteria in this myocardial tissue (arrows). 1
16:56, 19 August 2013 IPLab2FattyChange5.jpg (file) 75 KB Peter Anderson This higher-power photomicrograph of the centrilobular area gives the appearance of fatty tissue, as indicated by many empty spaces. Very few normal liver cells can be seen in this slide. A few more normal-appearing hepatocytes are present at the left ... 1
16:56, 19 August 2013 IPLab4SepticEmboli7.jpg (file) 81 KB Seung Park This is a higher-power photomicrograph of the abscess within the myocardium illustrating colonies of bacteria as the dark blue-staining material (arrow). 1
16:56, 19 August 2013 IPLab4SepticEmboli6.jpg (file) 76 KB Seung Park This is a low-power photomicrograph of myocardium with septic abscesses (arrows). 1
16:56, 19 August 2013 IPLab2FattyChange4.jpg (file) 77 KB Peter Anderson A higher-power photomicrograph illustrates more clearly the inflammatory cells (arrows) around the portal areas. 1
16:55, 19 August 2013 IPLab4SepticEmboli5.jpg (file) 69 KB Seung Park This is a higher-power photomicrograph of one of these septic abscesses illustrating the colonies of bacteria within necrotic cellular debris (arrows). This is typical of an abscess. 1
16:55, 19 August 2013 IPLab2FattyChange3.jpg (file) 73 KB Peter Anderson Another low-power photomicrograph illustrates again the pale, washed-out appearance of this tissue. Notice the numerous holes throughout the tissue. There are accumulations of inflammatory cells (arrows) around portal tracts. 1
16:55, 19 August 2013 IPLab4SepticEmboli4.jpg (file) 58 KB Seung Park This is a higher-power photomicrograph of the focal lesions in the lung produced by the septic emboli. Note these are clearly demarcated from the relatively normal surrounding lung tissue. 1
16:55, 19 August 2013 IPLab4SepticEmboli3.jpg (file) 45 KB Seung Park This low-power photomicrograph shows a section of lung on the left and myocardium on the right. Both pieces of tissue have multiple embolic lesions seen as blue staining areas with massive infiltration of inflammatory cells (arrows). 1
16:54, 19 August 2013 IPLab4SepticEmboli2.jpg (file) 35 KB Seung Park This is a gross photograph of myocardium with multiple embolic lesions scattered throughout the left and right ventricles. 1
16:54, 19 August 2013 IPLab2FattyChange2.jpg (file) 22 KB Peter Anderson This low-power photomicrograph of liver illustrates a very pale-staining section with a uniform appearance throughout the section. 1
16:54, 19 August 2013 IPLab4SepticEmboli1.jpg (file) 68 KB Seung Park This gross photograph of lung demonstrates microabscesses due to septic embolization. Note the small 2 to 3-mm lesions scattered throughout this lung tissue (arrows). 1
16:53, 19 August 2013 IPLab2FattyChange1.jpg (file) 42 KB Peter Anderson This gross photograph of liver tissue illustrates the yellowish color of the liver parenchyma. The yellow color indicates high fat content in this tissue. Compare this with the normal dark red color of liver. 1
16:50, 19 August 2013 IPLab4Thromboembolus10.jpg (file) 52 KB Seung Park This is a gross photograph of the fibrous band between the uterus and adjacent tissues. This fibrous scar tissue is probably left over from a previous surgery or an infection. A loop of bowel herniated through the opening produced by this fibrous band ... 1
16:49, 19 August 2013 IPLab4Thromboembolus9.jpg (file) 47 KB Seung Park This is a gross photograph of an opened abdomen at autopsy demonstrating loops of infarcted bowel (arrow). Vascular occlusion can lead to ischemic necrosis of the bowel. In this case, a section of bowel herniated through a fibrous connective tissue ban... 1
16:49, 19 August 2013 IPLab4Thromboembolus8.jpg (file) 65 KB Seung Park This is a gross photograph of cut section of testis from previous image. The tissue is filled with blood. 1
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