肿瘤可通过骶孔生长而引起骶神经根压迫症状。

They can extend through the sacral foramen to cause sacral nerve root compression.

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除非肿瘤已压迫或侵入神经，通常并不会造成疼痛。良性和恶性肿瘤皆会压迫邻近组织，阻塞血管或增生激素，以上症状都可能致死。

Tumours may not cause pain until they press on or invade nerves. both benign and malignant tumours can press on nearby structures block vessels or produce excess hormones all of which can cause death.

youdao

除非肿瘤已压迫或侵入神经，通常并不会造成疼痛。良性和恶性肿瘤皆会压迫邻近组织、阻塞血管或增生激素，以上症状都可能致死。

Tumours may not cause pain until they press on or invade nerves. both benign and malignant tumours can press on nearby structures block vessels or produce excess hormones all of which can cause death.

youdao