If not treated promptly, the appendix can rupture.

如果没有及时治疗，发炎的阑尾可能会破裂。

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If not treated, it can damage the lungs to such an extent that a person cannot breathe properly.

如果不予以治疗，肺结核就会损害肺部功能，且其损害的程度能一个使人难以正常呼吸。

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Severe cases of bacterial meningitis can result in brain damage or death if not treated quickly.

严重的细菌性脑膜炎若没有得到及时治疗，会导致脑损伤或者脑死亡。

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Some autoimmune forms of arthritis, if not treated, may cause joints to become deformed.

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If not treated, malaria can make the victim very sick and even cause death.

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If not treated, hypothermia can be deadly.

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If not treated, nearly all those infected with HIV will develop AIDS, according to the National Institutes of Health.

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Those thought to have pneumonia were excluded from the study due to the severity of the disease if not treated promptly.

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If not treated with antibiotics, mastoiditis can be deadly.

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