squamous cell carcinoma of anus

例句：

1. 1. He was diagnosed with anal squamous cell carcinoma and underwent surgery.
   他被诊断出患有肛门鳞状细胞癌，并接受了手术。
2. 2. The patient's condition worsened after the surgery, and he required further treatment.
   手术后，患者的病情恶化了，需要进一步治疗。
3. 3. The prognosis for this type of cancer is generally poor, but early detection can improve outcomes.
   这种癌症的预后通常较差，但早期发现可以提高结果。