{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T12:50:59Z","timestamp":1784638259220,"version":"3.55.0"},"reference-count":39,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,11]]},"abstract":"<jats:p>Choroid plexus papillomas (CPPs) are typically benign tumors that can occur in any age group but are more commonly found in pediatric patients. Although these tumors are benign, there are several reports in adult patients of distant metastases present either at the time of diagnosis or occurring months to years after initial resection. Here, the authors report the case of a 14-year-old boy who presented with symptoms of elevated intracranial pressure due to obstructive hydrocephalus that was caused by a large fourth ventricular mass. Preoperative imaging included a full MRI of the spine, which revealed an intradural lesion that encased the distal sacral nerve roots at the tip of the thecal sac and was concerning for a drop metastasis. The patient underwent gross-total resection of both the fourth ventricular and sacral tumors with histology of both lesions consistent with benign CPP (WHO Grade I). In addition, the authors review prior reports of both pediatric and adult patients in whom benign CPPs have metastasized with either benign or atypical pathology found at a distant site. Taking into account this unusual case and reports in the literature, patients with even benign CPPs may warrant initial and routine follow-up imaging of the total neural axis in search of the rare, but possible, occurrence of drop metastasis.<\/jats:p>","DOI":"10.3171\/2017.5.peds17130","type":"journal-article","created":{"date-parts":[[2017,8,25]],"date-time":"2017-08-25T13:55:21Z","timestamp":1503669321000},"page":"471-479","source":"Crossref","is-referenced-by-count":16,"title":["Spinal drop metastasis from a benign fourth ventricular choroid plexus papilloma in a pediatric patient: case report"],"prefix":"10.3171","volume":"20","author":[{"given":"Ramin A.","family":"Morshed","sequence":"first","affiliation":[{"name":"Department of Neurological Surgery, University of California, San Francisco; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darryl","family":"Lau","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, University of California, San Francisco; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter P.","family":"Sun","sequence":"additional","affiliation":[{"name":"UCSF Benioff Children\u2019s Hospital Oakland, California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauren R.","family":"Ostling","sequence":"additional","affiliation":[{"name":"UCSF Benioff Children\u2019s Hospital Oakland, California"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"J Clin Neurosci","doi-asserted-by":"publisher","first-page":"148","DOI":"10.1016\/j.jocn.2016.04.002","article-title":"Disseminated choroid plexus papillomas in adults: A case series and review of the literature","volume":"32","author":"Abdulkader MM","year":"2016","unstructured":"Abdulkader MM, Mansour NH, Van Gompel JJ, Bosh GA, Dropcho EJ, Bonnin JM, : Disseminated choroid plexus papillomas in adults: A case series and review of the literature. 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