Indications for superselective intra-arterial cisplatin infusion and concomitant radiotherapy in cases of hypopharyngeal cancer

Abstract

Objective: We retrospectively assessed the indications for superselective intra-arterial infusion of cisplatin with concomitant radiotherapy (RADPLAT) in patients with hypopharyngeal cancer (HPC). Methods: Between April 2000 and March 2013, 41 previously untreated patients received superselective intra-arterial infusion of cisplatin (100-120mg/m2 per week) with simultaneous intravenous infusions of thiosulfate to neutralize cisplatin toxicity and conventional radiotherapy (65-70Gy). Results: During the median follow-up period of 5.5 years, a statistically significant difference in the 5-year overall survival was noted between patients with N0-1 (n = 14) and N2b-3 disease (n = 27). One-half of deaths were observed to be the result of distant metastasis. The 5-year local control and overall survival were significantly better in patients with unilateral than in those with bilateral primary tumors. All the patients with T4b disease (n = 3) died of disease within 2 years. Conclusion: Indications for RADPLAT in patients with HPC were defined as patients with unilateral tumors staged as T3-4a and N0-1.