{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T11:34:49Z","timestamp":1761824089782},"reference-count":41,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:p>Diffuse villous hyperplasia of the choroid plexus (DVHCP) is a rare cause of communicating hydrocephalus. DVHCP may be diagnosed radiographically and through histological evaluation. It may be associated with genetic abnormalities, particularly involving chromosome 9. Due to CSF overproduction, patients with DVHCP often fail management with shunting alone and may require adjuvant interventions. The authors present the case of a child with partial trisomy 9p and delayed diagnosis of hydrocephalus with radiographic evidence of DVHCP who was successfully managed with ventriculoperitoneal shunt (VPS) placement, adjuvant bilateral endoscopic choroid plexus coagulation (CPC), and the novel application of anterior choroidal artery embolization. In addition, a systematic MEDLINE search was conducted using the keywords \u201cdiffuse villous hyperplasia,\u201d \u201cchoroid plexus hypertrophy,\u201d and \u201cidiopathic cerebrospinal fluid overproduction.\u201d Clinicopathological characteristics and outcomes of the present case were reviewed and compared to those in the literature.<\/jats:p><jats:p>A 14-month-old girl with partial trisomy 9p presented with macrocephaly and radiographic evidence of communicating hydrocephalus and DVHCP. Ventriculoperitoneal shunting resulted in distal failure due to inadequate CSF absorption, and ventriculoatrial shunt (VAS) placement was not possible due to multiple cardiac anomalies. Daily CSF production was reduced via endoscopic third ventriculostomy and bilateral CPC, followed by distal choroidal artery embolization, enabling VPS re-internalization. The embolization was complicated by radiographic evidence of an iatrogenic cerebral infarct, but this was clinically occult. Thirty-two additional cases of communicating hydrocephalus due to DVHCP are reported in the literature: 27 pediatric, 3 adult, and 2 postmortem. Genetic abnormalities were noted in 14, with 7 (50%) involving chromosome 9. Twelve patients underwent plexectomy (9 bilateral, 2 unilateral, 1 partial), and 10 underwent CPC (4 bilateral, 3 unilateral, and 3 unspecified), with or without shunting. Eight patients were successfully managed with shunting alone (6 VASs, 2 VPSs), and none underwent arterial embolization.<\/jats:p><jats:p>DVHCP is a rare cause of communicating hydrocephalus that may be associated with genetic abnormalities. A thorough review of the literature highlights diagnostic criteria and interventional options involved in managing this cause of CSF overproduction. The present case demonstrates that angiographic confirmation of prominent choroidal arteries may contribute to the diagnosis DVHCP. In addition, embolization of the distal choroidal arteries may be considered as a potential adjuvant treatment in patients for whom conventional treatments have failed or are not feasible.<\/jats:p>","DOI":"10.3171\/2019.1.peds18519","type":"journal-article","created":{"date-parts":[[2019,4,9]],"date-time":"2019-04-09T20:04:30Z","timestamp":1554840270000},"page":"737-748","source":"Crossref","is-referenced-by-count":8,"title":["Choroidal artery embolization in the management of cerebrospinal fluid overproduction: case report and review of the literature"],"prefix":"10.3171","volume":"23","author":[{"given":"Daphne","family":"Li","sequence":"first","affiliation":[{"name":"Department of Neurological Surgery, Loyola University Medical Center, Maywood, Illinois;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tahaamin","family":"Shokuhfar","sequence":"additional","affiliation":[{"name":"Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julia","family":"Pantalone","sequence":"additional","affiliation":[{"name":"University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian","family":"Rothstein","sequence":"additional","affiliation":[{"name":"Department of Surgery, Division of Pediatric Neurosurgery, Ann & Robert H. 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