User contributions
21 August 2013
File:IPLab10Blasto6.jpg
This high-power photomicrograph shows what appear to be inflammatory cells filling the alveoli. At this magnification, numerous round bodies (arrows) that look like inflammatory cell nuclei can be seen. However, on closer examination, some of these rou...
File:IPLab10Blasto5.jpg
This is a higher-power photomicrograph of lung section with pleura. The pleura (arrows) is thickened and contains inflammatory cells and fibrin. The alveoli are filled with inflammatory cells. Some of the alveolar septa are congested with red blood cells.
File:IPLab10Blasto4.jpg
This is a high-power photomicrograph of lung section with pleura. The pleura (1) is thickened and contains inflammatory cells and fibrin. The areas of consolidation (2) are dense and filled with inflammatory cells.
File:IPLab10Blasto3.jpg
This is a low-power photomicrograph of lung showing many areas of consolidation (arrows).
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This higher-power view of the lung shows more clearly the areas of necrosis (1) and consolidation (2). Satellite lesions are also present (3).
File:IPLab10Blasto1.jpg
This gross photograph of the lungs shows areas of necrosis and consolidation.
IPLab:Lab 10:Cryptococcosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab10Crypto1.jpg|This is the chest x-ray showing the mass (arrow) in the right lower lobe. File:IPLab10Crypto2.jp..."
File:IPLab10Crypto12.jpg
This is a touch prep of fresh lung tissue that was allowed to air dry and then stained to show the mucopolysaccharide capsule around the cryptococcal organisms (arrows).
File:IPLab10Crypto11.jpg
This is a higher-power photomicrograph of lung section stained with Alcian blue. The mucopolysaccharide capsule shrinks during processing with this stain, thereby producing a shrunken central appearance with the formation of spikes around each organism.
File:IPLab10Crypto10.jpg
This is a low-power photomicrograph of lung section stained with Alcian blue, which stains the acidic glycosaminoglycans making up the coat of the cryptococcal organism.
File:IPLab10Crypto9.jpg
This higher-power photomicrograph of a cryptococcal organism shows more clearly the nucleus surrounded by the large extracellular capsule (arrows).
File:IPLab10Crypto8.jpg
Cryptococcal organisms can also be seen in this high-power photomicrograph of the cryptococcal lesion. Some of the organisms have a well-defined halo (arrows) due to the mucopolysaccharide coat which surrounds them.
File:IPLab10Crypto7.jpg
This is another high-power photomicrograph of the cryptococcal lesion. In this section, numerous cryptococcal organisms (5-10 mm in diameter) can be seen (arrows). Note that there is very little inflammatory reaction.
File:IPLab10Crypto6.jpg
This is a high-power photomicrograph of the cryptococcal lesion. Some of the organisms have been expelled during processing, but some cryptococcal organisms can be seen (arrows).
File:IPLab10Crypto5.jpg
This is a higher-power photomicrograph of the cryptococcal lesion. The air spaces are filled with organisms (arrows).
File:IPLab10Crypto4.jpg
This is a low-power photomicrograph of the lung from the lesion seen on x-ray. Note that there is little, if any, inflammatory reaction.
File:IPLab10Crypto3.jpg
This is another section of this lung showing consolidation (arrows).
File:IPLab10Crypto2.jpg
This is a gross photomicrograph of this lung taken at autopsy. Note the areas of emphysema (1) and consolidation (2).
File:IPLab10Crypto1.jpg
This is the chest x-ray showing the mass (arrow) in the right lower lobe.
IPLab:Lab 10:Histoplasmosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab10Histo1.jpg|This low-power photomicrograph shows a section of adrenal gland with several irregularly-outlined ..."
File:IPLab10Histo7.jpg
This photomicrograph was taken under oil immersion to show the silver-stained Histoplasma organisms. Some of the organisms appear to be budding (arrows).
File:IPLab10Histo6.jpg
This is a high-power photomicrograph of the same section of tissue as the previous slide. This section, however, has been stained with methenamine silver which causes the Histoplasma organisms to stain black (arrows).
File:IPLab10Histo5.jpg
This high-power photomicrograph shows small (2-5 mm) dark-staining organisms in the cytoplasm of many of these cells (arrows).
File:IPLab10Histo4.jpg
This high-power photomicrograph was taken at the edge of the area of necrosis. There is a mild inflammatory infiltrate along the edge of the necrosis.
File:IPLab10Histo3.jpg
This is an even higher-power photomicrograph of an area of necrosis (arrows). There is loss of cellular detail within this area. There are inflammatory cells present; however, it is difficult to differentiate the inflammatory cells from the native lymp...
File:IPLab10Histo2.jpg
This higher-power photomicrograph of the previous adrenal gland shows more clearly the irregularly-shaped area of necrosis (arrows).
File:IPLab10Histo1.jpg
This low-power photomicrograph shows a section of adrenal gland with several irregularly-outlined areas of necrosis.
IPLab:Lab 10:Candidiasis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab10Candidiasis1.jpg|This autopsy photograph of the kidneys demonstrates the multifocal punctate lesions visible ..."
File:IPLab10Candidiasis8.jpg
This is a higher-power photomicrograph of a Candida colony in the kidney. Note the pseudohyphae of the Candida organisms.
File:IPLab10Candidiasis7.jpg
This is a low-power photomicrograph of the kidney from this same case. Note the Candida colonies (arrows). The pseudohyphae are evident around the periphery of these colonies even at this low magnification.
File:IPLab10Candidiasis6.jpg
This high-power photomicrograph shows the yeasts (1) and pseudohyphae (2).
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This higher-power photomicrograph shows the yeasts and pseudohyphae in this focus of Candida organisms.
File:IPLab10Candidiasis4.jpg
This is a low-power photomicrograph of one of the Candida colonies from this lymph node. The chains of yeast which are termed "pseudohyphae" are apparent at this magnification.
File:IPLab10Candidiasis3.jpg
This is a low-power photomicrograph of lymph node with three prominent areas of Candida colonies (arrows). Even at this low magnification, the purple-staining yeast and pseudohyphae can be easily seen. This section was stained with Periodic Acid-Schiff...
File:IPLab10Candidiasis2.jpg
This photograph of the cut surface of these kidneys shows that these multifocal punctate lesions are primarily in the cortex (arrows).
File:IPLab10Candidiasis1.jpg
This autopsy photograph of the kidneys demonstrates the multifocal punctate lesions visible on the serosal surface (arrows). Don't confuse these small yellow punctate lesions with the fat that is adherent to the renal capsule.
IPLab:Lab 9:Actinomycosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab9Actinomycosis1.jpg|This is a low-power photomicrograph of the retroperitoneal abscess. At this magnification, ..."
File:IPLab9Actinomycosis5.jpg
This is a high-power photomicrograph of an actinomycotic colony. The filamentous nature (arrows) of the actinomyces organisms is more easily appreciated at this power.
File:IPLab9Actinomycosis4.jpg
This is an even higher-power photomicrograph of actinomycotic colonies in the abscess. The filamentous nature (arrows) of the actinomyces organisms in these colonies can be appreciated.
File:IPLab9Actinomycosis3.jpg
This is a higher-power photomicrograph of actinomycotic colonies in the abscess.
File:IPLab9Actinomycosis2.jpg
This is a higher-power photomicrograph of an abscess demonstrating a pocket of purulent exudate that contains numerous actinomycotic colonies (arrows).
File:IPLab9Actinomycosis1.jpg
This is a low-power photomicrograph of the retroperitoneal abscess. At this magnification, multiple dark-staining foci can be appreciated. These foci are Actinomyces colonies (arrows). These colonies are known as "sulfur granules" because in gross spec...
IPLab:Lab 9:Clostridial Myonecrosis
Created page with "== Images == <gallery heights="250px" widths="250px"> File:IPLab9Clostridium1.jpg|This gross photograph of the lower extremity was taken at autopsy. Notice the swelling and th..."
File:IPLab9Clostridium7.jpg
This is a high-power photomicrograph of a tissue section stained with a tissue Gram's stain (Brown & Brenn). The Gram-positive bacilli can be seen throughout this tissue section.
File:IPLab9Clostridium6.jpg
This higher-power photomicrograph of the previous image provides a clearer view of gas bubbles in the tissue, the necrotic hypereosinophilic muscle cell (1), and the mild inflammatory reaction (2). At this magnification, the bacteria located throughout...
File:IPLab9Clostridium5.jpg
This high-power photomicrograph shows the gas accumulation present in the tissue, a necrotic muscle cell (1), and a mild inflammatory response (2). There is also a thrombosed blood vessel (3). The blue-staining rods (bacterial organisms) can barely be ...
File:IPLab9Clostridium4.jpg
This is a high-power photomicrograph of skeletal muscle. The muscle cells are hypereosinophilic and most do not contain nuclei, indicating that these cells are dead or dying. The round clear spaces (1) in this tissue correspond to gas accumulations pri...
File:IPLab9Clostridium3.jpg
This is a low-power photomicrograph of muscle fascicles containing large gas bubbles (arrows). Note that there is no inflammatory reaction in this section.
File:IPLab9Clostridium2.jpg
This gross photograph shows a close-up view of hemorrhagic blebs (arrows) on the skin. The blebs on the skin are accumulations of gas being discharged into the tissues from the Clostridium perfringens. This gas produces crepitance.
File:IPLab9Clostridium1.jpg
This gross photograph of the lower extremity was taken at autopsy. Notice the swelling and the area of the primary infection (arrow).