World Neurosurg
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Review Case Reports
Spontaneous tumor regression of intracranial solitary fibrous tumor originating from the medulla oblongata: A case report and literature review.
Intracranial solitary fibrous tumor (SFT) is a rare occurrence and involvement of the fourth ventricle rarely reported. Because of its rarity, some characteristics of intracranial SFT seem to still remain uncertain. ⋯ Although the location of the SFT in the fourth ventricle is rare, SFT should be considered as 1 of the differential diagnosis of fourth ventricle tumors. In addition, this case indicates that SFT in the fourth ventricle may regress on occasion spontaneously without a precisely known cause for this spontaneous partial regression.
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Cerebral aneurysms (CAs) are characterized by a pathological wall structure with internal elastic lamina and media disruption, which leads to focal weakened pouches of the arterial wall. The prevalence of unruptured CAs has been estimated to be 2%-5% in the general population. ⋯ In the present review, we have summarized the inflammatory pathways, genetics, and risk factors for the formation, growth, and rupture of CAs. In addition, we have discussed the concepts of geometric indexes, flow patterns, and fluid dynamics that govern CA development.
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Review
Melanotic neuroectodermal tumor of infancy arising in the skull and brain: a systematic review.
Melanotic neuroectodermal tumor of infancy (MNTI) is a rare pigmented craniofacial tumor of infants. This study aimed to analyze the literature on MNTI arising from the skull and brain. A systematic literature review was performed and 91 patients reported in 78 articles were identified from 1918 to 2019. ⋯ MNTI of the skull mostly presented as a rapidly growing mass, whereas intracranial MNTI presented with increasing intracranial pressure and neurologic dysfunction. Surgical resection was the primary treatment, with an average follow-up of 25.6 months. Overall survival was related to age at diagnosis within 1 year (P = 0.001), tumor location (P < 0.001), tumor size (P = 0.010), treatment (P < 0.001), and metastasis (P < 0.001) and malignancy (P < 0.001), whereas recurrence rate was significantly associated with age (P < 0.001), tumor size (P = 0.010), complete surgical resection (P = 0.011), metastasis (P = 0.003), and malignant behavior (P = 0.001).
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Pituitary apoplexy is associated with visual, cranial nerve, and endocrine dysfunction. In this article, the results of surgical and conservative management of pituitary apoplexy in a single center are evaluated and a review of the literature is presented. ⋯ A tailored approach to pituitary apoplexy, one that does not include an absolute need for surgery, is appropriate. Conservative management is appropriate in selected patients presenting without visual deficits.
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Review Case Reports
Surgical Obliteration of Anterior Cranial Fossa Dural Arteriovenous Fistulas via Unilateral High Frontal Craniotomy.
Surgical obliteration is generally recommended for anterior cranial fossa dural arteriovenous fistulas (ACF DAVFs) because of a high risk of bleeding and the difficulty of endovascular approaches. Surgical obliteration is generally performed via a frontobasal craniotomy; however, it is slightly excessive over the target fistula. Here, we present 2 cases of ACF DAVFs treated with small craniotomy without frontal sinus involvement and a review of the related literature. ⋯ Constructing a small corridor and a deep working distance in unilateral small high frontal craniotomy may be a slightly unusual approach; however, it is thought to provide sufficient space and a range of microscopic views that facilitate surgical manipulation without requiring extensive bone work.