9,183 results found
Article
Northern exposure sign (sigmoid volvulus)
The northern exposure sign has been described as a high specificity sign in sigmoid volvulus. On a supine abdominal radiograph, the apex of the sigmoid volvulus is seen above (cranial to) the transverse colon.
Case
Primary non-Hodgkin lymphoma of the duodenum
Published
07 Dec 2021
80% complete
CT
Article
Ascites
Ascites (hydroperitoneum is a rare synonym) is defined as an abnormal amount of intraperitoneal fluid.
Terminology
Ascites (plural is the same word) tends to be reserved for relatively sizable amounts of peritoneal fluid. The amount has not been defined formally. It is noted physiologically, h...
Case
Amyand hernia
Published
15 Apr 2022
92% complete
CT
Article
Portal venous gas
Portal venous gas, also known as pneumatosis portalis, is the accumulation of gas in the portal vein and its branches. It needs to be distinguished from pneumobilia, although this is usually not too problematic when associated findings are taken into account along with the pattern of gas (i.e. p...
Article
Crohn disease
Crohn disease, also known as regional enteritis, is an idiopathic inflammatory bowel disease characterized by widespread discontinuous gastrointestinal tract inflammation. The terminal ileum and proximal colon are most often affected. Extraintestinal disease is common.
Epidemiology
The diagnos...
Case
Duodenal diverticula
Published
28 Jun 2017
64% complete
CT
Article
Hirschsprung disease
Hirschsprung disease is the most common cause of neonatal colonic obstruction (15-20%). It is commonly characterized by a short segment of colonic aganglionosis affecting term neonates, especially boys.
Epidemiology
Hirschsprung disease affects approximately 1:5000-8000 live births. In short-...
Case
Rectal cancer - T3
Published
24 Jan 2022
74% complete
MRI
Case
Lumbar incisional hernia
Published
03 Dec 2022
80% complete
CT
Case
Acute colonic diverticulitis
Published
05 Nov 2023
73% complete
CT
Case
Cecal and ascending colon cancer
Published
30 Jan 2022
77% complete
CT
Article
Gastrointestinal leiomyoma (overview)
Gastrointestinal leiomyomas are smooth muscle tumors without malignant potential that may develop in any part of the gastrointestinal system:
esophageal leiomyoma
gastric leiomyoma
small bowel leiomyoma
colonic leiomyoma
Article
Adrenal metastasis
Adrenal metastases are the most common malignant lesions involving the adrenal gland. Metastases are usually bilateral but may also be unilateral. Unilateral involvement is more prevalent on the left side (ratio of 1.5:1).
Epidemiology
They are present at autopsy in up to 27% of patients with ...
Case
Small bowel obstruction
Published
28 Jan 2022
89% complete
CT
X-ray
Case
Dextrocardia (situs inversus)
Published
06 May 2013
72% complete
Annotated image
Case
Hirschsprung disease
Published
18 Apr 2011
63% complete
Fluoroscopy
X-ray
Case
Perianal fistula
Published
04 Aug 2022
75% complete
Fluoroscopy
Article
Retroperitoneal hydatid infection
Retroperitoneal hydatid infection refers to the presence of hydatid cyst in the retroperitoneal region of the abdomen.
For a general discussion, and for links to other system specific manifestations, please refer to the article on hydatid disease.
Pathology
It is generally seen secondary to ...
Case
Normal colonic transit
Published
26 Jan 2022
88% complete
X-ray
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