Utility of Early Postoperative Imaging after Combined Endoscopic and Open Ventral Skull Base Surgery

Author:

Mendelson Zachary S.1,Echanique Kristen A.1,Crippen Meghan M.1,Vazquez Alejandro1,Liu James K.123,Eloy Jean Anderson1234

Affiliation:

1. Department of Otolaryngology—Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey

2. Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark, New Jersey

3. Department of Neurological Surgery, Rutgers New Jersey Medical School, Newark, New Jersey

4. Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, New Jersey

Abstract

Purpose Immediate postoperative imaging is frequently obtained after combined skull base surgery (SBS) with endoscopic endonasal and open transcranial approaches. The importance of early postoperative imaging for detecting complications in these patients is still debatable. In this study, we investigated the clinical utility of early postoperative imaging after combined SBS for determination of postoperative complications. Methods A retrospective chart analysis of 21 cases of combined SBS between 2009 and 2015 was performed. Data on postoperative computed tomography (CT) and magnetic resonance imaging (MR), and the hospital course were collected. We separated interpretations of postoperative imaging into two groups: (1) when using the radiologist's interpretation alone, and (2) when using the surgeon's knowledge of the case in conjunction with imaging. Results Forty-two postoperative scans were obtained (21 CT, 21 MR) within 48 hours of surgery. There was a significant statistical difference between imaging interpretation by surgeons and radiologists for CT interpretation only. For CT interpretation the true positive (TP), false positive (FP), true negative (TN), and false negative (FN) rates for radiologists (TP, 0/21; FP, 6/21; TN, 11/21; FN, 4/21) slightly deviated from surgeons' interpretation (TP, 1/21 [p = 0.9999]; FP, 0/21 [p = 0.0207]; TN, 17/21 [p = 0.1000]; FN, 3/21 [p = 1.000]). Rates for MRI interpretation by both groups were nearly identical, with no significant difference found. Overall, four patients experienced seven postoperative complications, which led to a complication rate of 19.0% (4/21). The patients exhibited clinical symptoms in all instances of postoperative complications that required further intervention. Conclusion The benefit of early postoperative imaging to detect complications after combined SBS was limited. In this cohort of patients, positive imaging findings' effects on patient management were dictated by the presence of supporting clinical symptoms.

Publisher

SAGE Publications

Subject

General Medicine,Otorhinolaryngology,Immunology and Allergy

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