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== Images ==
<galleryheights="250px" widths="250px">
File:IPLab1Tuberculosis1.jpg|This is a gross photograph of a cut section of lung from this patient with disseminated tuberculosis. The numerous small white nodules scattered throughout this lung tissue represent individual tuberculosis granulomas. In addition, note the dark areas throughout the lung which represent deposits of anthracotic pigment.
File:IPLab1Tuberculosis2.jpg|This is a closer view of the same section of lung containing multiple white granulomas which are now more easily identified (arrows). These lesions are referred to as miliary tuberculosis. Dark areas of anthracosis are also prominent in this lung.
File:IPLab1Tuberculosis6.jpg|This photomicrograph shows a single nodule with an amorphous eosinophilic center and accumulations of cells around the outer edge. This is typical of a granuloma associated with tuberculosis in which there is a necrotic center (1) and a rim of lymphocytes, macrophages, and occasional multinucleated giant cells around the periphery.
File:IPLab1Tuberculosis7.jpg|This is a higher-power view of the granuloma with the amorphous eosinophilic material representing caseation necrosis (1), giant cells near the center (2), and inflammatory cells around the periphery.
File:IPLab1Tuberculosis8IPLab1Tuberculosis8b.jpg|This is a high-power photomicrograph of the Langhans-type multinucleated giant cell which is cells (arrows) that are characteristic of tuberculous granulomas (arrow). Note the horseshoe shape ring of the nuclei in this these giant cell. The majority of the cells in the upper left portion of this section are macrophages which provide the major cellular component in a granuloma. Note the smaller number of small blue-staining cells in the peripheral portions of this granuloma to the left of which are lymphocytes.
</gallery>
== Virtual Microscopy ==
=== Lung: Tuberculosis ===
<peir-vm>IPLab1Tuberculosis</peir-vm>
=== Normal Lung ===
<peir-vm>UAB-Histology-00107</peir-vm>
== Study Questions ==
=== Images ===
* [http://peir.path.uab.edu{{SERVER}}/library/index.php?/tags/259-tuberculosis PEIR Digital Library: Tuberculosis Images]
* [http://library.med.utah.edu/WebPath/LUNGHTML/LUNGIDX.html#4 WebPath: Granulomatous Disease Images]