hemangioma of kidney

例句：

1. 1. The patient had a hemangioma on his left leg that was painful and swollen.
   病人左腿上有一个海绵状血管瘤，很痛且肿胀。
2. 2. The hemangioma was removed surgically to relieve the patient's pain.
   为了减轻病人的疼痛，这个血管瘤被手术切除了。
3. 3.Hemangiomas are common in children and can be treated with steroid injections.
   海绵状血管瘤在儿童中很常见，可以通过注射类固醇来治疗。