Surgical Treatment of Intraorbital Lesions.

Background: Resection of pure intraorbital tumors is challenging owing to the nearness of the optic apparatus. The objective of this article was to report our experience with different intraorbital tumors and discuss classic approaches and obstacles.

Methods: A retrospective case series of patients who underwent surgery for intraorbital tumors at a tertiary neurosurgical center between June 2007 and January 2020 was performed.

Results: The study included 34 patients (median age 58 years; range, 18-87 years; 55.9% [19/34] female, 44.1% [15/34] male). Preoperative proptosis was observed in 67.6% (23/34); visual impairment, in 52.9% (18/34); diplopia, in 41.2% (14/34); and ptosis, in 38.3% (13/34). Intraconal tumors were found in 58.8% (20/34). The most common lesions were cavernous hemangiomas in 26.5% (9/34) and metastases in 14.7% (5/34). Gross total resection rate was 73.5% (25/34). Planned biopsy was performed in 14.7% (5/34). Median follow-up time was 15.5 months (interquartile range: 0-113 months). Surgical approaches included supraorbital approach (23.5% [8/34]), pterional approach (52.9% [18/34]), lateral orbitotomy (14.7% [5/34]), transnasal approach (5.9% [2/34]), and combined transnasal approach/lateral orbitotomy (2.9% [1/34]). Excluding planned biopsies, gross total resection was achieved in 80.0% (12/15) with pterional approach, 100% (7/7) with supraorbital approach, 80.0% (4/5) with lateral orbitotomy, and 100% (1/1) with transnasal approach/lateral orbitotomy. Complication rate requiring surgical intervention was 11.8% (4/34).

Conclusions: Considering the low operative morbidity and satisfactory functional outcome, gross total resection of intraorbital lesions is feasible. We support use of classic transcranial and transorbital approaches. More invasive and complicated approaches were not needed in our series.