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Background:   Most meningiomas related to head trauma have been reported to show intradural lesions; however, they can also occur as primary extradural meningiomas (PEMs) and have often been reported to histologically demonstrate atypical or malignant subtypes. Therefore, early detection and complete resection of related tissues are required; however, to date, only a few PEM cases related to trauma or injury have been reported. Herein, we present a patient with a rapidly growing posttraumatic PEM, in which echosonography is efficient not only for early diagnosis but also for intraoperative strategies.    Case Description:   A 62-year-old male presented to a nearby clinic with a complaint of a painless head bump that gradually grew larger in relation to trauma 6 weeks earlier. He underwent echosonography and pointed out the possibility of a cranial tumor and consulted our hospital. Although preoperative imaging studies, such as computed tomography or magnetic resonance imaging, did not provide reliable information on dura mater invasion, echosonography demonstrated dural invasion and intradural lesions in which large vessels passed the surface of the lesion. Based on these findings, we could safely resect the lesion within a sufficient range.    Conclusion:   Echosonography may not only be a cue for an early diagnosis but also provide important information for the treatment strategy of PEM that is related to head trauma.

Posttraumatic rapid growing extradural meningioma: A case report on the effectiveness of echosonography