Aims and objectives
Primary small bowel tumors are rare,
account for 3-5% of all gastrointestinal tumors and have been estimated to be 1 per 100,000 people [1-4].
Because ofthe rarity and the variaty of histological subtypes,
small bowel neoplasm has been less studiedthan the rest of gastrointestinal tract. It is often diagnosed in late-stage due to clinical features are nonspecific or asymptomatic until some complications develop.
The small intestine has been difficult to be approached for investigation.
Methods and materials
Patient population: In this retrospective study of patient data from January 2015 to May 2018 in University medical center and Cho Ray hospital at Ho Chi Minh city,
The inclusion criteria were as follows: pathologicallyprovenprimary small bowel neoplasms and MDCT performed with intravenous contrast media before biopsy or surgery.
Gastrointestinal stromal tumors (GISTs) were defined in this study as CD117-positive .
The periampullary tumors and lipomas were excluded.
Data of 83 patients met the criteria for including in the study.
The study included 53 males (64%) and 30 females (36%).
Median age at presentation was 56 years.
The most common tumors were GISTs (36.1%),
followed by lymphomas (26.5%),
and others (13.3%; including 4 inflammatory fibroid polyps,
1 NET and 1 cavernous hemangioma). The anatomical distribution of the small bowel tumor was 21 duodenum,
MDCT findings could potentially be useful to differentiate the primary small bowel neoplasms based on analyzing specific imaging characteristics of each kind of tumor. Our study had some limitations.
First of all,
this was retrospective study,
so we could not control the protocol.
The protocols were variable due to nonspecific clinical scene.
it was actual daily practice,
radiologist usually have to face with nonoptimal imaging like inadequate luminal distention.
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"Primary Malignant Diseases of the Small Intestine" . American Journal of Roentgenology , 201 (1),
W9-W14. 2. Neugut A.I.,
"The epidemiology of cancer of the small bowel" . Cancer Epidemiol Biomarkers Prev , 7 (3),
243-251. 3. Pan S.Y.,
"Epidemiology of cancer of the small intestine" . World Journal of Gastrointestinal Oncology , 3 (3),
33-42. 4. Sailer J.,