Searching For Ideal Definite Treatment of Sinonasal Squamous Cell Carcinoma with Orbit Invasions.

Abstract

Sinonasal squamous cell carcinoma (SqCC) often invades the orbit. Treatment of sinonasal cancer invading orbit can vary depending on the medical center and the extent of the invasion. The definitive treatment strategy, whether it involves preserving the orbit or not, varies on a case-by-case basis and leads to different outcomes. Currently, a multimodal treatment approach, which includes surgery, chemotherapy (CTx), radiotherapy (RT), or concurrent chemoradiotherapy (CCRT), is frequently employed for sinonasal cancers. This study aims to evaluate the prognosis of sinonasal SqCC with orbit invasion in various perspectives. We conducted a retrospective review of patients with primary sinonasal SqCC invading the orbit who were treated at between 2009 and 2018. We examined factors such as the extent of tumor, orbit invasion, treatment strategies, recurrence rates, and survival rates. Overall survival (OS) and disease-free survival (DFS) rates did not significantly differ based on the grade of orbit invasion. When tumor resection with orbit preservation was performed as definitive treatment, DFS was significantly longer compared to cases where surgery was not the definitive treatment (RT, CCRT). There was no significant difference in DFS between those who underwent orbit exenteration and those who underwent tumor resection with orbit preservation as the definitive treatment. Tumor resection with orbit preservation as the definitive treatment appears to be the preferred approach, leading to prolonged DFS while ensuring survival in cases of SqCC with orbit invasion.