Chiari I malformation: Case report

Abstract

Arnold Chiari type I malformation (CM-I) is a genetic disease first described in 1891 by Hans Chiari (SCHIJMAN, 2004). CM-I is characterized by the descent of the cerebellar tonsils more than 5 mm from the lower margin of the foramen magnum, which can impede the flow of cerebrospinal fluid (CSF) and is often associated with syringomyelia (BALL; CRONE, 1995; ROMERO-LUNA et al., 2022), generating great clinical neurological interest due to the difficulty in diagnosis (MORO et al., 1999).