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descDate Name Thumbnail Size User Description Versions
14:29, 16 January 2014CytologicallyYoursUnknowns201401-04-10.jpg (file)730 KBSeung Park 3
14:29, 16 January 2014CytologicallyYoursUnknowns201401-04-09.jpg (file)613 KBSeung Park 2
14:28, 16 January 2014CytologicallyYoursUnknowns201401-04-08.jpg (file)679 KBSeung ParkReverted to version as of 20:27, 16 January 20144
14:27, 16 January 2014CytologicallyYoursUnknowns201401-04-07.jpg (file)525 KBSeung Park 2
00:06, 21 August 2013IPLab13Meningococcemia8.jpg (file)21 KBSeung ParkThis is a higher-power photomicrograph of a smear of cerebrospinal fluid taken at autopsy. Note the Gram-negative cocci in this smear, indicative of N. meningitidis.1
00:05, 21 August 2013IPLab13Meningococcemia7.jpg (file)34 KBSeung ParkThis higher-power photomicrograph of the adrenal gland from this case provides an example of hemorrhagic necrosis.1
00:05, 21 August 2013IPLab13Meningococcemia6.jpg (file)20 KBSeung ParkThis is a low-power photomicrograph of the adrenal gland from this case. Note that the entire gland is hemorrhagic.2
00:05, 21 August 2013IPLab13Meningococcemia5.jpg (file)56 KBSeung ParkThis is a gross photograph of cross sections through the adrenal glands from this case. Both adrenal glands are markedly hemorrhagic.1
00:05, 21 August 2013IPLab13Meningococcemia4.jpg (file)75 KBSeung ParkThis photomicrograph of the skin shows thrombi and fibrin clots in small vessels in the dermis. This is indicative of the endothelial damage caused by the Neisseria meningitidis endotoxin. This endotoxin-induced damage to the endothelium of small blood...1
00:05, 21 August 2013IPLab13Meningococcemia3.jpg (file)48 KBSeung ParkIn this gross photograph of the abdomen taken at the autopsy, there are petechial hemorrhages on the viscera (arrows).1
00:04, 21 August 2013IPLab13Meningococcemia2.jpg (file)36 KBSeung ParkThis is a closer view of the inguinal region taken at autopsy. The areas of hemorrhage include purpura and petechiae (arrows).1
00:04, 21 August 2013IPLab13Meningococcemia1.jpg (file)29 KBSeung ParkIn this gross photograph from the autopsy, note the areas of hemorrhage in the inguinal region.1
00:02, 21 August 2013IPLab13CF14.jpg (file)54 KBSeung ParkAnother high-power photomicrograph of intestine shows the vacuolated intestinal epithelial cells lining the crypts and necrotic debris and inspissated secretions within the crypts (arrows).1
00:02, 21 August 2013IPLab13CF13.jpg (file)71 KBSeung ParkA higher-power photomicrograph of intestine shows the vacuolated intestinal epithelial cells lining the crypts and necrotic debris and inspissated secretions within the crypts (arrows).1
00:01, 21 August 2013IPLab13CF12.jpg (file)86 KBSeung ParkThis is a low-power photomicrograph from another section of the intestine. Saggital sections of the intestinal crypts show the crypts along their full length, extending to the mucosal surface.1
00:01, 21 August 2013IPLab13CF11.jpg (file)60 KBSeung ParkThis higher-power photomicrograph shows more clearly the eosinophilic debris (arrows) in the intestinal crypts.1
00:01, 21 August 2013IPLab13CF10.jpg (file)74 KBSeung ParkThis is a higher-power photomicrograph showing the eosinophilic debris in many of the intestinal crypts (arrows).1
00:01, 21 August 2013IPLab13CF9.jpg (file)87 KBSeung ParkA higher-power photomicrograph shows the bottom of the intestinal crypts and the other normal layers of the intestine. Even at this magnification, accumulations of eosinophilic debris can be seen in many of the intestinal crypts (arrows).1
00:00, 21 August 2013IPLab13CF8.jpg (file)47 KBSeung ParkThis low-power photomicrograph of intestine shows the normal layers of the intestine, including the serosa (1), the muscularis (2), the submucosa (3), and the mucosal layer (4) with its deep mucosal crypts. There is yet another cystic space within the ...1
00:00, 21 August 2013IPLab13CF7.jpg (file)64 KBSeung ParkThis is another high-power photomicrograph showing cystic spaces (1) within the acinar pancreas and a normal islet of Langerhans (2).1
00:00, 21 August 2013IPLab13CF6.jpg (file)73 KBSeung ParkThis high-power photomicrograph shows more clearly these variably-sized cystic spaces within the acinar pancreas.1
00:00, 21 August 2013IPLab13CF5.jpg (file)74 KBSeung ParkThis higher-power photomicrograph shows a cystic space (1) within an acinar lobule. Islets of Langerhans (2) are also visible.1
00:00, 21 August 2013IPLab13CF4.jpg (file)85 KBSeung ParkThis higher-power photomicrograph of the pancreas shows interstitial tissue and the presence of small cystic spaces (1) within the acinar lobules. These spaces are filled with an eosinophilic proteinaceous material. The islets of Langerhans (2) are una...1
23:59, 20 August 2013IPLab13CF3.jpg (file)83 KBSeung ParkThis low-power photomicrograph of pancreas shows increased interstitial connective tissue resulting in accentuation of the lobular pattern.1
23:59, 20 August 2013IPLab13CF2.jpg (file)55 KBSeung ParkThis section of duodenum demonstrates dilation, loss of rugae, and areas of ulceration (arrows).1
23:59, 20 August 2013IPLab13CF1.jpg (file)52 KBSeung ParkThis is a gross photograph of liver and pancreas from the autopsy. The pancreas is slightly smaller than normal and it has a mucous consistency.1
23:56, 20 August 2013IPLab13WT10.jpg (file)78 KBSeung ParkThis high-power photomicrograph shows the differences in cell morphology between the blastema (1) and the fibroblast type cells (2).1
23:56, 20 August 2013IPLab13WT9.jpg (file)81 KBSeung ParkThis high-power photomicrograph demonstrates tubule formation within the blastema. Note the numerous mitotic figures (arrows).1
23:56, 20 August 2013IPLab13WT8.jpg (file)72 KBSeung ParkThis is a high-power photomicrograph of "tubule" formation within the blastema (arrows).1
23:55, 20 August 2013IPLab13WT7.jpg (file)78 KBSeung ParkThis is another medium-power photomicrograph of the tumor. It demonstrates again the two cell types making up this neoplasm. The glands or "tubules" within the blastema are better developed in this section (arrows).1
23:55, 20 August 2013IPLab13WT6.jpg (file)84 KBSeung ParkThis medium-power photomicrograph of tumor shows again the two cell types making up this neoplasm. There are regions within the blastema where the cells form glands or "tubules" (arrows).1
23:55, 20 August 2013IPLab13WT5.jpg (file)91 KBSeung ParkThis low-power photomicrograph of tumor shows the two cell types making up this neoplasm. The basophilic cellular component termed "blastema" (1) can be distinguished from less cellular eosinophilic areas with fibroblast-like cells (2).1
23:55, 20 August 2013IPLab13WT4.jpg (file)30 KBSeung ParkThis lowest-power view shows the tumor itself; no tissue is present that can be readily identified as normal kidney. There does appear to be a capsule surrounding the tumor. Eosinophilic bands are seen surrounding basophilic islands of cells. These cor...1
23:55, 20 August 2013IPLab13WT3.jpg (file)43 KBSeung ParkThis is a gross photograph of lung from this case demonstrating the metastatic tumor nodule (arrow).1
23:54, 20 August 2013IPLab13WT2.jpg (file)39 KBSeung ParkThis is a closer view of the kidney with Wilms' tumor (arrows).1
23:54, 20 August 2013IPLab13WT1.jpg (file)51 KBSeung ParkThis is a gross photograph of a bladder (1) to which are attached a normal kidney (2) and a kidney with Wilms' tumor (3). A large mass extends from the superior pole of the affected kidney. The renal capsule can be seen extending around this tumor.1
23:52, 20 August 2013IPLab13Hyaline9.jpg (file)78 KBSeung ParkThis higher-power photomicrograph shows more clearly the hyaline membranes (arrows) and the congestion in the interstitium.1
23:52, 20 August 2013IPLab13Hyaline8.jpg (file)90 KBSeung ParkThis medium-power photomicrograph shows the pink acellular homogeneous material lining the alveoli which comprises the hyaline membranes (arrows). The interstitium shows congestion, as in previous sections.1
23:51, 20 August 2013IPLab13Hyaline7.jpg (file)93 KBSeung ParkThis high-power photomicrograph shows an airway with adjacent lung tissue. Some alveoli have hyaline membranes (arrows). There is severe congestion of the interstitium throughout this section.1
23:51, 20 August 2013IPLab13Hyaline6.jpg (file)85 KBSeung ParkThis is a medium-power photomicrograph showing a large bronchus with cartilage. Interstitial congestion with numerous red cells is apparent. Even at this magnification hyaline membranes (arrows) can be seen lining the alveoli.1
23:51, 20 August 2013IPLab13Hyaline5.jpg (file)78 KBSeung ParkThis low-power photomicrograph of lung demonstrates hypercellular pulmonary interstitium and small air spaces (as compared to adult lungs).1
23:51, 20 August 2013IPLab13Hyaline4.jpg (file)81 KBSeung ParkThis high-power photomicrograph of liver shows more clearly the immature blood cell precursors (arrows) which represent extramedullary hematopoiesis of the liver. The liver is a normal site of fetal hematopoiesis and, for this stage of gestation, extra...1
23:51, 20 August 2013IPLab13Hyaline3.jpg (file)89 KBSeung ParkThis is a low-power photomicrograph of liver which contains dark blue-stained cells in the hepatic sinusoids. These are immature blood cell precursors and this represents extramedullary hematopoiesis of the liver.1
23:50, 20 August 2013IPLab13Hyaline2.jpg (file)36 KBSeung ParkThis is a low-power photomicrograph of a triangular-shaped section of lung (1) and an oblong section of liver (2). The lack of open air spaces in this neonatal lung indicates its immaturity.1
23:50, 20 August 2013IPLab13Hyaline1.jpg (file)46 KBSeung ParkThis is a gross photograph of lung demonstrating hyaline membrane disease and atelectasis.1
23:48, 20 August 2013IPLab13BiliaryAtresia5.jpg (file)87 KBSeung ParkThis is a medium-power photomicrograph of liver section stained with a trichrome stain to demonstrate the portal fibrosis. The fibrous connective tissue (collagen) stains blue.1
23:48, 20 August 2013IPLab13BiliaryAtresia4.jpg (file)72 KBSeung ParkThis is a high-power photomicrograph of fibrotic portal region with several bile ducts that contain inspissated bile (arrows). Adjacent hepatocytes also contain bile pigments.1
23:48, 20 August 2013IPLab13BiliaryAtresia3.jpg (file)82 KBSeung ParkThis high-power photomicrograph of fibrotic portal region demonstrates proliferation of the bile ducts (arrows).1
23:47, 20 August 2013IPLab13BiliaryAtresia2.jpg (file)95 KBSeung ParkThis medium-power photomicrograph of liver shows an area of portal fibrosis and bile duct proliferation (arrows). Adjacent to this fibrotic portal region, hepatocytes are seen separated by dilated sinusoids. Throughout this section are found accumulati...1
23:47, 20 August 2013IPLab13BiliaryAtresia1.jpg (file)30 KBSeung ParkThis is a low power photomicrograph of a section of liver. Even at this low magnification, areas of fibrosis can be appreciated.1

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