1·What do hemangiomas look like?
血管瘤什么样子？
2·What are the possible complications of hemangiomas?
血管瘤可能发生的并发症有哪些？
3·Many causative factors have been implicated including trauma, coagulopathies, rupture of arteriovenous malformations, vertebral body hemangiomas, hypertension, and pregnancy.
诱发因素包括许多：创伤、凝血病、动静脉畸形破裂、椎体血管瘤、高血压以及妊娠。
4·Pregnancy and estrogen-based medications can cause cavernous hemangiomas to grow.
妊娠和雌激素药物可能导致的海绵状血管瘤增长。
5·Cavernous hemangiomas can occur at anytime, but are most common in the 30s to 50s.
海绵状血管瘤，随时可能发生，但最常见的是50年代到30。