极为小心地

Herein, we present an extremely rare case of rectal ameboma associated with amebic liver abscess, which can only be distinguished with great care from rectal cancer with liver metastasis.

我们在此提出一个直肠阿米巴瘤并肝脓疡的病例，虽然极为罕见，但是必须非常小心地和直肠癌并肝脏转移的病人区分。