1) Amans MR, Dillon WP:Cerebral parenchymal cyst:a rare complication of ventriculoperitoneal shunt malfunction in an adult. Radiol Case Rep 8:784, 2015
2) Cartmill M, Ashpole RD:Spontaneous resetting of a Codman-Medos programmable shunt. Br J Neurosurg 14:373-374, 2000
3) Chiba Y, Takagi H, Nakajima F, Fujii S, Kitahara T, Yagishita S, Itoh Y:Cerebrospinal fluid edema:a rare complication of shunt operations for hydrocephalus. Report of three cases. J Neurosurg 57:697-700, 1982
4) 布川知史,赤井文治,頼前 玲,新山一秀,近藤澄夫,湯上春樹,種子田譲:脳室腹腔シャント機能不全による髄液脳実質内漏出.脳外速報8:221-226, 1998
5) Kale HA, Muthukrishnan A, Hegde SV, Agarwal V:Intracranial perishunt catheter fluid collections with edema, a sign of shunt malfunction:correlation of CT/MRI and nuclear medicine findings. AJNR Am J Neuroradiol 38:1754-1757, 2017
6) Karydakis P, Nikas I, Panagopoulos D, Filippidou M, Sfakianos G, Themistocleous M:Intraparenchymal pericatheter cyst after cerebrospinal fluid shunt:a rare complication with challenging diagnosis-case presentation and review of the literature. Asian J Neurosurg 14:581-584, 2019
7) Miwa K, Kondo H, Sakai N:Pressure changes observed in Codman-Medos programmable valves following magnetic exposure and filliping. Childs Nerv Syst 17:150-153, 2001
8) Park HJ, Lee SH, Park HJ, Shin SH:A porencephalic cyst formation in a 6-year-old female with a functioning ventriculoperitoneal shunt:a case-based review. Childs Nerv Syst 34:611-616, 2018
9) Sakamoto H, Fujitani K, Kitano S, Murata K, Hakuba A:Cerebrospinal fluid edema associated with shunt obstruction. J Neurosurg 81:179-183, 1994
10) Shekawat JS, Sundar Ⅳ, Poonia N, Sinha VD:Intraparenchymal pericatheter cyst following ventriculoperitoneal shunt. Neurol India 60:341-342, 2012
11) 田中克之,山口由太郎,鈴木理恵,宮北康二,吉田 浩,小野 元,関野宏明:自然誤作動をきたしたMedos-Hakim programmable valveの4症例.脳外速報7:223-227, 1997
12) Wallace DJ, Grandhi R:Intraparenchymal pericatheter cyst in ventriculoperitoneal shunt failure. BMJ Case Rep 2017:bcr2017220468, 2017
13) Watkins JD, Lee J, Van Engen MJ, Tibbs ML, Ellegala DB, Nicholas JS:Isolated left homonymous hemianopia secondary to a pericatheter cyst-a rare presentation of a ventriculoperitoneal shunt failure. J Neuroophthalmol 35:60-64, 2015