The sign of origination stomach wall hyper-enhancement facilitates the diagnosis of exogenic gastrointestinal stromal tumor

doi:10.3877/cma.j.issn.2095-3224.2019.03.004

Abstract

Abstract:

Objective

To explore the significance of the origination stomach wall hyper-enhancement sign and the polar distribution of necrosis and cyst component in differential diagnosis of exogenic gastrointestinal stromal tumor (GIST).

Methods

CT images of pathologically proven typeⅢ GIST (n=18) and other tumors from adjacent organ (pancreatic neuroendocrine tumor, n=6; SPT, n=8; HCC, n=2) with fat space disappeared between stomach wall and the tumors were analyzed prospectively. The status of the origination stomach wall hyper-enhancement sign and the polar distribution of necrosis and cyst component were recorded. The longest diameters and CT values (HU) on arterial and venous phases were measured.

Results

The ratio of origination stomach wall hyper-enhancement sign in GIST (9/15) was higher than other organ originated tumors (0/16) (χ²=12.857, P=0.007). On the polar distribution of necrosis and cyst component, the necrosis and cyst component of GIST was more prone to deviate away from gastric wall than the other organ originated tumors, but without statistical significance (χ²=5.947, P=0.051). There was no significance demonstrated in longest diameters (Z=-0.587, P=0.570) and CT values of both arterial (Z=-0.829, P=0.412) and venous phases (Z=-1.450, P=0.147).

Conclusion

The origination stomach wall hyper-enhancement sign can facilitate CT in differential diagnosis of gastric exogenic gastrointestinal stromal tumor.

Key words: GIST, Tomography, X-ray computed, Diagnosis

Jia Fu, Lei Tang, Jian Li, Ziyu Li, Ying Li, Xiaoting Li, Yingshi Sun, Lin Shen. The sign of origination stomach wall hyper-enhancement facilitates the diagnosis of exogenic gastrointestinal stromal tumor[J]. Chinese Journal of Colorectal Diseases(Electronic Edition), 2019, 08(03): 231-235.

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URL: https://zhjzcjbdzzz.cma-cmc.com.cn/EN/10.3877/cma.j.issn.2095-3224.2019.03.004

https://zhjzcjbdzzz.cma-cmc.com.cn/EN/Y2019/V08/I03/231

Figures/Tables 3

References 14

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影像学特点		GIST组	非GIST组	检验值	P值
基本CT征象		?	?	?	?
?	长径（cm）	10.18（4.8~21.3）	9.56（5.6~13.2）	Z=-0.587	0.570
?	CT值（动脉期）　（HU）	72.11（51~141）	62.45（41~104）	Z=-0.829	0.412
?	CT值（静脉期）　（HU）	88.56（64~120）	76.31（56~121）	Z=-1.450	0.147
脏器间隙消失情况^*		?	?	χ²=4.142	0.160
?	肝脏（例）	7	5	?	?
?	胰腺（例）	5	15	?	?
?	脾脏（例）	6	3	?	?
起源胃壁强化征		?	?	χ²=12.857	0.007
?	阳性（例）	9	0	?	?
?	阴性（例）	6	16	?	?
坏死囊变极性		?	?	χ²=5.947	0.051
?	分散不定（例）	5	5	?	?
?	偏向胃壁侧（例）	2	7	?	?
?	偏离胃壁侧（例）	11	4	?	?

影像学特点		GIST组	非GIST组	检验值	P值
基本CT征象		?	?	?	?
?	长径（cm）	10.18（4.8~21.3）	9.56（5.6~13.2）	Z=-0.587	0.570
?	CT值（动脉期）　（HU）	72.11（51~141）	62.45（41~104）	Z=-0.829	0.412
?	CT值（静脉期）　（HU）	88.56（64~120）	76.31（56~121）	Z=-1.450	0.147
脏器间隙消失情况^*		?	?	χ²=4.142	0.160
?	肝脏（例）	7	5	?	?
?	胰腺（例）	5	15	?	?
?	脾脏（例）	6	3	?	?
起源胃壁强化征		?	?	χ²=12.857	0.007
?	阳性（例）	9	0	?	?
?	阴性（例）	6	16	?	?
坏死囊变极性		?	?	χ²=5.947	0.051
?	分散不定（例）	5	5	?	?
?	偏向胃壁侧（例）	2	7	?	?
?	偏离胃壁侧（例）	11	4	?	?

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