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A CT scan image showing a ruptured abdominal aortic aneurysm. CT Scan of 11 cm Wilms' tumor of right kidney in 13-month-old patient. Computed tomography of the abdomen and pelvis is an application of computed tomography (CT) and is a sensitive method for diagnosis of abdominal diseases. It is used frequently to determine stage of cancer and to ...
However, SUDD occurs when only abdominal pain with bowel habit change is present, without any other systemic symptoms of diverticulitis like fever, elevated white blood cell count, elevated C-reactive protein. [6] Low grade inflammation of the colonic mucosa within the diverticulum and visceral hypersensitivity are also thought to cause SUDD. [6]
Diverticulitis typically presents with lower quadrant abdominal pain of a sudden onset. [1] Patients commonly have elevated C-reactive protein and a high white blood cell count. [10] In Asia it is usually on the right (ascending colon), while in North America and Europe, the abdominal pain is usually on the left lower side (sigmoid colon).
Diverticulitis is defined as diverticular disease with signs and symptoms of diverticular inflammation. Clinical features of acute diverticulitis include constant abdominal pain, localized abdominal tenderness in the left lower quadrant of the abdomen, nausea, vomiting, constipation or diarrhea, fever and leukocytosis. [12]
When diverticula (singular: diverticulum) become sites of inflammation the condition is termed "diverticulitis" and occurs when the diveritcula become infected. This classically causes lower abdominal pain, changes in bowel habits (diarrhea or constipation) and signs of inflammation (fever/chills, nausea/vomiting).
Unlike diverticulitis, SCAD involves inflammation of the colon between diverticula (interdiverticular mucosa), while sparing the diverticular orifices. SCAD may lead to abdominal pain, especially in the left lower quadrant, intermittent rectal bleeding and chronic diarrhea. [1]
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A CT scan or ultrasound of the abdomen and pelvis are the preferred imaging modalities in the evaluate of an acute abdomen. [8] The use of radiocontrast agents with CT scans improve diagnostic accuracy. [2] Some authors advocate for the use of CT angiography with contrast of the abdomen and pelvis as the preferred imaging modality. [2]