salivary duct carcinoma

例句：

1. 1. He was diagnosed with a rare form of cancer that affects the salivary ducts.
   他被诊断出患有一种罕见的癌症，这种癌症影响唾液导管。
2. 2. The patient's condition worsened after surgery, and he was admitted to the hospital for further treatment.
   手术后，患者的病情恶化，他被转入医院接受进一步治疗。
3. 3. The doctor explained the symptoms and recommended an early diagnosis and treatment for this type of cancer.
   医生解释了症状，并建议及早诊断和治疗这种癌症。