rectal lymphosarcoma

例句：

1. 1. This patient has a rectal lymphosarcoma, which requires immediate treatment.
   这名患者患有直肠淋巴瘤，需要立即治疗。
2. 2. The doctor diagnosed the patient with a rectal lymphosarcoma and recommended surgery as the primary treatment.
   医生诊断出患者患有直肠淋巴瘤，并建议作为主要治疗方法进行手术。
3. 3. The patient's condition worsened after receiving treatment for a rectal lymphosarcoma.
   经过对直肠淋巴瘤的治疗，患者的病情恶化了。