Intensity-modulated radiation therapy for a sinonasal intestinaltype adenocarcinoma patient: a rare case report

Intestinal-type adenocarcinoma (ITAC) is a rare tumor, representing possibly 1.4% of all the sinonasal and skull base malignancies. We present a 62-year-old male with cT4bN0M0, stage IVB intestinaltype sinonasal adenocarcinoma who developed right eye blindness due to tumor-compression of the optic nerve. He received surgery and adjuvant radiotherapy at 70 Gy in 35 fractions, which improved his blindness. After 37 months of follow-up, no progression disease or distant metastasis was found. This case is a reminder of the important role radiotherapy plays in the post-operative treatment of sinonasal ITAC patients.