Cancer of the stomach can be difficult to diagnose in its early stages.

癌症的胃，可很难诊断在其早期阶段。

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Effect such as brain tumor, cervical cancer, lung cancer, cancer of the stomach, neuroblastoma is very good.

脑瘤，宫颈癌，肺癌，胃癌，神经母细胞瘤等效果很好。

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The surprising findings have shown a three percent increase in noncardia gastric cancer which affects the lower area of the stomach.

VOA: standard.2010.05.12

Prior work has shown that the precise type of bacteria responsible for lung infections or even the presence of stomach cancer could be discerned in the breath.

BBC: Exhaled breath is unique fingerprint

When chemical preservatives and color enhancers are ingested, they cause the body to produce nitrosamines which cause cancer of the liver, stomach, brain, bladder, kidneys and several other organs.

FORBES: Does genetically modified corn cause cancer? A flawed study fails to convince.

Currently doctors diagnose stomach cancer by taking a biopsy of the stomach lining using a probe and a flexible camera passed via mouth and down the gullet.

BBC: Stomach cancer 'spotted by breath test'