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Published on: February 21, 2018
Assessing Olfactory Bulb Infiltration and Morphological Changes in Olfactory Neuroblastoma Using Magnetic Resonance
Teppei Takeda1,2, Yasine Mirmozaffari2, Teru Ebihara1
1Department of Otorhinolaryngology, The Jikei University School of Medicine, Tokyo, Japan.
Summary
Magnetic resonance imaging (MRI) metrics of the olfactory bulb (OB) accurately predict olfactory neuroblastoma (ONB) invasion. OB volume and area measurements show high sensitivity and specificity, aiding diagnosis and treatment planning.
Area of Science:
- Neuroimaging
- Oncology
- Otorhinolaryngology
Background:
- Olfactory neuroblastoma (ONB) is a rare malignancy originating in the olfactory epithelium.
- Assessing olfactory bulb (OB) invasion is crucial for accurate staging and treatment planning in ONB.
- Current methods for evaluating OB invasion may have limitations.
Purpose of the Study:
- To evaluate magnetic resonance imaging (MRI)-based changes in olfactory bulb (OB) volume and area.
- To predict the likelihood of OB invasion in patients diagnosed with olfactory neuroblastoma (ONB).
Main Methods:
- Retrospective review of MRI data from 46 patients with ONB.
- Preoperative measurement of OB volume and cross-sectional area.
- Correlation of MRI metrics with surgical pathology findings of OB invasion.
Main Results:
- Significant differences in OB metrics were observed between patients with and without OB invasion.
- OB volume (AUC=0.971) and maximum cross-sectional area (AUC=0.941) demonstrated high discriminative ability for predicting invasion.
- A left-right OB difference ratio exceeding 175% was a strong predictor of invasion.
Conclusions:
- Quantitative MRI metrics of the OB are effective in predicting invasion in ONB.
- These findings can enhance diagnostic accuracy and influence treatment strategies for ONB.
- Further validation in larger cohorts is recommended.
