gastroenterology cases
Gastrointestinal Stromal Tumour of the Rectum...
GISTs occur most often in the stomach (60-70%), followed by the small bowel (20-30%; ileum > jejunum > duodenum), the colon/rectum (5%), and the esophagus (5%). The majority are benign; 10-30% are...
Gastrointestinal Stromal Tumour of the Rectum...
Immunohistochemistry was positive for and CD 117 (c-kit) in the GIST. A GIST can’t be Diagnosed by H&E Gastrointestinal stromal tumor (GIST) is a mesenchymal spindle cell (70-80%) or epithelioid (20-30%)...
There are chronic inflammatory changes and macrophages....
There are chronic inflammatory changes and macrophages. 10x.
High power view of brown pigment inside of macrophages...
High power view of brown pigment inside of macrophages at the lamina propria.
High power view of brown pigment inside of macrophages...
Macrophages contain brown lipofuscin and lysosomal debris
Pathophysiology
The cryptoglandular hypothesis states that an infection begins in the anal gland and progresses into the muscular wall of the anal sphincters to cause an anorectal abscess. Following surgical or spontaneous...
Acute Trombosed hemorrhoids
This is the case of a 62 year-old male that during 12 years have been suffering from internal hemorrhoids grade III hemorrhoids protrude spontaneously and require manual reduction but never seek medical...
Acute Trombosed hemorrhoids 2
Internal hemorrhoids drain through the superior rectal vein into the portal system. External hemorrhoids drain through the inferior rectal vein into the inferior vena cava. Rich anastomoses exist between...
Fistula in Ano (1 of 7)
Fistula-In-Ano: External opening of fistulus tract is apparent in photo above. Proximal opening would be at level of crypts, within the anal canal. Fistulas are frequently associated with perirectal...
Fistula in Ano (7 of 7)
An anal fistula usually lasts until it is surgically removed. The fistula tract must be opened along with the source of the infection. Usually, tissue around the external opening and the internal opening...
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Gottumukkala Raju
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Ahmad Hormati
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Gastroenterology Atlas
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EUS - ENDO
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SAGES - Society of American Gastrointestinal and Endoscopic Surgeons
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American Association for Primary Care Endoscopy
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Colonscopy Quiz by Dr. Raju
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Anal Fissure
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Shahram Nazari
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