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Journal Article
Review
A brainstem mass of Müllerian type Epithelial Origin without any primary cancer source.
Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia 2018 October 16
Brainstem tumors are rare, even rarer is a brainstem tumor containing tissues of an embryologic gynecologic origin. We report a very rare case of presence of a calcified heterogeneously contrast enhancing brainstem mass of Müllerian origin in a patient in a 38 year old female with no female genital tract cancer and past surgical history of ventriculoperitoneal (VP) shunt placement for congenital hydrocephalus. To our knowledge this is the very first and unusual case of a mass of gynecologic origin in the brainstem region especially in the setting of no history of gynecological tumor. The authors also reviewed the literature for all tumors reported for anterograde and retrograde dissemination of tumor cells through VP shunt. This case is a reaffirmation of the importance of brain tumor location and tissue diagnosis for the purpose of adjuvant treatment of neurosurgical lesions in the neurocritical care setting. It also highlights the role of catheters as potential routes of iatrogenic transmission not just in anterograde but also in a retrograde manner to the CNS, which is very unusual. This is the only second case to report retrograde flow of tumor cells from an extraneural source up the VP catheters. The authors suggest that intraperitoneal chemotherapy should be considered in the cases of known extraneural abdominal malignancies of high malignant potential with or without the presence of peritoneal infiltration in order to avoid dissemination through VP shunts.
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