CT Evaluation of Small Bowel Tumors: Detection & Classification
CT Evaluation of Small Bowel Tumors: Detection & Classification |
“Although the small intestine accounts for over 90% of the surface area of the alimentary tract, tumors of the small intestine represent less than 5% of all gastrointestinal tract neoplasms. Common small bowel tumors typically are well evaluated with cross-sectional imaging modalities such as CT and MR, but accurate identification and differentiation can be challenging. Differentiating normal bowel from abnormal tumor depends on imaging modality and the particular technique.” Multimodality imaging of small bowel neoplasms. Williams EA1, Bowman AW2 Abdom Radiol 2019 Jun;44(6):2089-2103 |
“Differentiating normal bowel from abnormal tumor depends on imaging modality and the particular technique. While endoscopic evaluation is typically more sensitive for the detection of intraluminal tumors that can be reached, CT and MR, as well as select nuclear medicine studies, remain superior for evaluating extraluminal neoplasms. Understanding the imaging characteristics of typical benign and malignant small bowel tumors is critical, because of overlapping features and associated secondary complications.” Multimodality imaging of small bowel neoplasms. Williams EA1, Bowman AW2 Abdom Radiol 2019 Jun;44(6):2089-2103 |
CTA of the Small Bowel: Scan Protocol Oral contrast
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CTA in the Abdomen: Applications Patient preparation
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CTA in the Abdomen: Applications Scan Protocol Selection
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3D CT Angiography Protocol: Small Bowel Arterial Phase (64MDCT and Beyond)  |
CTA in the Abdomen: Applications Data Analysis Tools
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Do you see the duodenal mass?  |
Subtle Tumor Duodenal Carcinoid  |
Coronal and VRT Views  |
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Small Bowel GIST Missed with Positive Contrast  |
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6 months later  |
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“Small bowel cancer is a rare malignancy that comprises less than 5 % of all gastrointestinal malignancies. The estimated annual incidence is 0.3–2.0 cases per 100,000 persons, with a higher prevalence rates in the black population than the white, and has been recently increasing. It is most frequently diagnosed among people aged 55–64, with the incidence increasing after age 40. The current 5-year survival rate in the USA is 65.5 %; cancer stage at diagnosis has a strong influence on the length of survival.” Small bowel adenocarcinoma of the jejunum: a case report and literature review Li J et al. World Journal of Surgical Oncology 2016; 14:177 |
Common Cancer Numbers  |
Small Bowel Cancer: By The Numbers  |
“Cancer of the small intestine is very uncommon. There are 4 main histological subtypes: adenocarcinomas, carcinoid tumors, lymphoma and sarcoma. The incidence of small intestine cancer has increased over the past several decades with a four-fold increase for carcinoid tumors, less dramatic rises for adenocarcinoma and lymphoma and stable sarcoma rates.” Epidemiology of cancer of the small intestine Pan SI, Morrison H World J Gastrointest Oncol 2011 March 15; 3(3):33-42 |
Small Bowel Tumors: Frequency
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Adenocarcinoma of the Small Bowel-CT Appearance
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Adenocarcinoma of the Small Bowel- Facts
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Small Bowel Neoplasms Risks
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Small Bowel Neoplasms Presentation
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Duodenal Carcinoma Arising in a Villous Adenoma  |
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Duodenal Adenocarcinoma  |
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Hx-abdominal pain and weight loss  |
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Small Bowel Adenocarcinoma  |
Adenocarcinoma Duodenum  |
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