A rare case of type 1 C split cord malformation with single dural sheath

Abstract

Split cord malformation (SCM) is a rare congenital anomaly in which the cord is split over a portion of its length to form double dural tubes (SCM type I) or two hemicords in a single dural sheath (SCM type II). Dachling Pang classified SCM into 2 types with type I SCM consisting of two hemicords, each contained within its own dural sheath and separated by rigid osseocartilaginous median septum. We report a rare case of SCM type 1 c in which there was a single dural sheath.

Split cord malformation associated with scoliosis in adults

“…Incidence of an SCM was found to be bimodal, where most patients presented in infancy or their teens and later presentations happened in latter parts of the fourth decade of life. [7][8][9][10][11][12][13][14][15][16][17] There are two general types of SCMs. In type I SCM, the hemicords are enveloped within individual dural sacs and separated by a rigid (bony or cartilaginous) median spur.…”

Type 1.5 Split Cord Malformations : Bridging the Gap

“…Mahapatra and Gupta 4) reported the largest single centre experience of classical SCMs involving 254 patients from our institution, however no cases of type 1.5 SCM was noted. Five of the total 15 cases reported in the literature at different time points belong to our institution, constituting one third of the total reported cases 1,3,6,8,10) .…”

Historical Perspective of Split Cord Malformations: A Tale of Two Cords

“…In the early 1970s, Laale [21] used ethanol to produce notochordal and subsequent SCM in zebrafish embryos [17]. In 1960, the work of Bentley and Smith [5], documenting 5 cases of defective development of the notochord that resulted in its duplication, introduced the concept of a split notochord, a syndrome included in the spectrum of spinal dysraphism.…”

“…In the late 1920s, Feller and Stenberg [16] were the first to implicate a notochordal cleft, caused by persistence of a midline cell rest, as the cause of diastematomyelia [17]. By 1940, Herren and Edwards [18] attempted to form a systematic description of such split cords based on a collection of 42 cases obtained from autopsy specimens [3].…”