Usefulness of T2*-weighted MR sequence for the diagnosis of subfrontal schwannoma |
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Authors: | Santhosh K Kesavadas C Radhakrishnan V V Thomas B Kapilamoorthy T R Gupta A K |
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Affiliation: | Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, 695011 Trivandrum, India. chandkesav@yahoo.com |
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Abstract: | Subfrontal schwannomas are rare tumors that are usually diagnosed during surgery. They are often misdiagnosed as meningioma or esthesioneuroblastoma because of their similar clinical and radiological features. We report a case of schwannoma arising from the floor of the anterior cranial fossa that had radiological features similar to that of meningioma. However, T2*-weighted MR imaging revealed multiple foci of low signal intensities within the tumor related to microbleeds, which suggested a diagnosis of schwannoma that was confirmed by histopathology. This case report demonstrates the usefulness of T2*-weighted sequence in distinguishing meningioma from schwannoma, especially in cases where the tumor has an unusual location. |
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