WordNet

related to or having filaments (especially across a field of view as in the eyepiece of a telescope); "a filar eyepiece"
thin in diameter; resembling a thread (同)filiform, filamentlike, threadlike, thready
slender threadlike roundworms living in the blood and tissues of vertebrates; transmitted as larvae by biting insects
having or using two filaments; "a bifilar suspension of a waving part of an instrument"
of or relating to or belonging to the family Filariidae
having or using only one filament

PrepTutorEJDIC

Filar cysts in rare cases may progress in size, particularly when associated with filar lipoma.

Seo K, Oguma H, Furukawa R, Gomi A.
Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery. 2019 Jul;35(7)1207-1211.
Filar cysts (FCs) are detected incidentally on ultrasonography (US) of the neonatal spine. Their clinical significance has not been widely discussed in the literature because FCs are usually asymptomatic. This study aimed to investigate the clinical features of FCs and distinguish FCs that warrant a
PMID 30972496

Chong S, Lee JY, Kim KH, Shin HI, Kim K, Park K, Kim SK, Wang KC.
Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery. 2019 May;().
Indication, timing, and method for surgical treatment of lumbosacral lipoma are controversial. Radical resection of the lumbosacral lipoma and complete reconstruction of the placode are supported in that better long-term outcome can be achieved without increasing complication rate compared with trad
PMID 31152216

Naruke Y, Horie H, Nagai Y, Ando R.
Clinical neuropathology. ;38(1)33-37.
Filar lipomas are a subtype of spinal lipomas wherein adipose tissue accumulation is restricted to the filum terminale. Embryologically, filar lipomas are considered to occur because of the failure of secondary neurulation, although the precise mechanism is not yet completely understood. Involvement
PMID 30309451

前島基志,東澤恭介,安井一浩,宮坂実木子,堤義之,野坂俊介,長田裕次,松林守,宮崎澄夫,奥山虎之
超音波検査技術 39(1), 11-21, 2014
… US spinal cord and spinal cord area findings revealed 15 cases of filar cysts, 12 cases of spinal lipomas, one case of lumbar syringomyelia, and one case of sacral cystic lesion. …
NAID 130004950062

長坂昌登,大澤弘勝,加藤美穂子
脳神経外科ジャーナル 23(5), 392-400, 2014
… LMMC, sacral lipoma, large lipomaは1歳までに, dorsal type, filar typeには3歳までの手術が望ましいと考えられた. …
NAID 130004610372

Double Lumbosacral Lipomas of the Dorsal and Filar Types Associated With OEIS Complex : Case Report

TOKUNAGA So,MORIOKA Takato,HASHIGUCHI Kimiaki,SAMURA Kazuhiro,YOSHIDA Fumiaki,MIYAGI Yasushi,YOSHIURA Takashi,YAMANOUCHI Takeshi,SASAKI Tomio
Neurologia medico-chirurgica = 神経外科 49(10), 487-490, 2009-10-15
… Constructive interference in steady-state magnetic resonance imaging clearly revealed double lipomas, a dorsal-type lipoma, located dorsal to the low-lying conus medullaris, and a filar-type lipoma, revealed by a thickened and fatty filum terminale. … After recovery from abdominogenital repairs, debulking of the dorsal-type lipoma and untethering of the spinal cord by sectioning of the filar-type lipoma were performed at the age of 14 months. …
NAID 10025949001