ISSN: 1899-0967
Polish Journal of Radiology
Established by prof. Zygmunt Grudziński in 1926 Sun
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1/2021
vol. 86
 
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Gastrointestinal and abdominal radiology
abstract:
Original paper

Enhancement pattern of differentiated and undifferentiated gastric carcinoma on multiphasic contrast-enhanced computed tomography

Baphiralyne Wankhar
1
,
Aman Yusuf Khan
1
,
Vandana Raphael
2
,
Dathiadiam Tongper
3
,
Donkupar Khongwar
3
,
Kyrshanlang G Lynrah
4

1.
Department of Radiology, Northeastern Indira Gandhi Regional Institute of Health and Medical Sciences, Shillong, Meghalaya, India
2.
Department of Pathology, Northeastern Indira Gandhi Regional Institute of Health and Medical Sciences, Shillong, Meghalaya, India
3.
Department of Surgery, Northeastern Indira Gandhi Regional Institute of Health and Medical Sciences, Shillong, Meghalaya, India
4.
Department of General Medicine, Northeastern Indira Gandhi Regional Institute of Health and Medical Sciences, Shillong, Meghalaya, India
Pol J Radiol 2021; 86: e630-637
Online publish date: 2021/11/22
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Purpose
To study the enhancement pattern of differentiated and undifferentiated gastric carcinoma on multiphasic contrast-enhanced computed tomography (CT).

Material and methods
Seventy patients with biopsy-proven gastric cancer underwent multiphasic contrast-enhanced CT. The CT protocol include plain, arterial, portal venous, and hepatic venous phase. Tumour size, location, peak-enhan­cement characteristics, and staging were evaluated.

Results
The peak-enhancement type was ‘arterial’ in 20 out of 28 within the differentiated-type GCAs and ‘portalvenous’ in 37 out of 42 within the undifferentiated-type GCAs (c2 statistic with Yates correction = 23.3981, p < 0.00001). The maximum attenuation value was statistically significant for the arterial phase between differentiated and undifferentiated GCAs (p < 0.05).

Conclusions
Assessing peak-enhancement in a multiphasic CT can help identify the histological subcategory of gastric carcinomas that has prognostic significance. Arterial phase peak-enhancement is frequently seen in differentiated carcinomas whereas venous phase peak-enhancement is seen in undifferentiated carcinomas.

keywords:

gastric carcinoma, multiphasic CT, enhancement pattern




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