gemmangioma

例句：

1. 1.The tumor is located in the lower part of the abdomen, close to the umbilicus.
   肿瘤位于腹部下部，靠近脐部。
2. 2.The patient was diagnosed with a gemmangioma and underwent surgery.
   患者被诊断出患有一个良性肿瘤，并接受了手术。
3. 3.The gemmangioma was removed surgically, and the patient made a full recovery.
   良性肿瘤被手术切除，患者完全康复。