비부비동 암종의 수술에서 안구 보존의 의의 = The Significance of Orbital Preservation in Surgery of the Sinonasal Malignancies

다국어 초록 (Multilingual Abstract)

Background and Objectives：Preservation of orbital contents during surgery of paranasal sinus malignant tumors encroaching
on the orbit remains a controversial issue. The purpose of this study is to investigate significance of orbital preservation in the
surgery of sinonasal malignancies abutted orbit in view of oncological safety and functional outcome. Subjects and Method：
A retrospective review was conducted using medical records of 41 patients who underwent surgery between Mar 1991 and Feb
2006 for sinonasal malignancies abutting or eroding orbit. Results：Among 41 cases of sinonasal tract malignancies abutting or
invading into the orbit, thirty-four of 41 tumors were amenable for surgical treatment with orbital preservation and the remaining
7 underwent orbital exenteration. 71.4% (5/7) of the patients whose orbit was exenterated had local recurrence, compared with
20.5% (7/34) of the patients whose orbit was preserved. The 5-year survival rate was 50.0% in the orbit exenterated group and
59.9% in the orbit preserved group. This difference was not statistically significant (p>0.05). In the preservation group, local
recurrence rate was 27.1% (2/9) in the periorbita involvement group, 22.2% (2/9) in the bony destruction group and 14.3%
(2/14) in the abutting orbit group. There is no statistically significant difference among three groups. Although some patients had
problems, the fact that all patients retained their orbit demonstrates adequate visual acuity. Conclusion：Local recurrence and
survival rate were not significantly different between the orbital preservation and exenteration group and also between the bony
destruction and periorbita involvement group. So, in the selected case of periorbita invasion, orbital preservation could be
considered.

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