World Neurosurg
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Xanthomas are benign lipomatous deposits that can be found systemically in various tissues including bones. Their presence in the skull remains a rare entity. Despite their benign characteristics, imaging modalities are often unable to distinguish them from malignant lesions. This leads to a diagnostic dilemma in patients with underlying malignancy. This case report highlights such a case where clinical history of prostate cancer and image findings were concordant with that of metastatic deposit in the parietal skull region. ⋯ Xanthomas are benign lesions that can be seen deposited in appendicular and axial skeleton. Skull lesions are rare with most case descriptions focusing on their presence in the frontoorbital regions and mandible and temporal bone. They usually have a benign course but may present with symptoms due to localized mass effect. Surgical intervention and histologic diagnosis may still be required in these lesions due to their lack of imaging characteristics that confirm their diagnosis through noninvasive methods.
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Spinal arteriovenous fistula (AVF) may rarely associate with spinal dysraphism, that is, tethered spinal cord and spinal intradural lipoma. Spinal extradural angiolipoma coexisting with spinal AVF has not been reported in the literature. We reported an extremely rare case of sacral angiolipoma associated with tight filum terminale and sacral spina bifida coexisting with spinal AVF within this tumor. ⋯ Sacral extradural angiolipoma in the present case may be congenital in origin with development of an acquired spinal AVF within the tumor.
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Case Reports
A Case Series of Retroperitoneal Lymphocele Following Anterior Lumbar Interbody Fusion.
Lymphocele is a rare complication following anterior lumbar interbody fusion with very few reported cases in the literature. We report 3 cases of lymphocele following anterior lumbar interbody fusion. ⋯ This case report reviews the diagnostic algorithm and management of lymphocele following anterior lumbar interbody fusion.
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Case Reports
A case of salivary duct carcinoma intracranial invasion due to perineural invasion through the facial nerve.
Salivary duct carcinoma (SDC) is a rare parotid tumor that often develops as a rapidly growing mass with a poor prognosis. It has a high rate of distant metastases, sometimes with infiltration along nerves. We describe a case of SDC that originated outside the cranium and extended into the cranium along the path of the facial nerve. ⋯ All 4 surgical specimens of this case were presented, and the path of tumor progression was examined in detail. Although the primary lesion was small, intracranial invasion along the facial nerve occurred. SDC should be considered as a tumor that can extend into the cranium, even with a small primary lesion.
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Ossifying fibroma (OF) is a benign tumor commonly occurring in the mandible and maxilla. Spinal involvement of OFs is of great rarity. To the best of our knowledge, only 3 cases in the thoracic and lumbar spine have been reported. ⋯ Spinal involvement of OFs seldom occurs. To the best of our knowledge, we have reported the first OF involving the cervical spine. Differentiating OFs from primary spinal tumors is necessary. OFs have locally aggressive behavior and a high risk of recurrence. Complete resection, followed by regular examinations, should be the ideal choice for treatment.