Syringomyelia is a disorderinvolving the spinal cord which is abnormal accumulation of CSF inrnthe spinal cord . Pathologically, it ischaracterized by the presence of longitudinally orientedrncavities and gliosis. Theterm "hydromyelia" has been used to describe the appearance ofrndilatation of thecentral canal of the spinal cord while the term "syringomyelia" has beenrnreservedfor cavities independent of the central canal .From a practical viewpoint, it isimpossiblernto differentiate most cases of true hydromyelia from those of truesyringomyelia. Consequently,rnrecent literature tends to unite the two terms syringohydromyelia or to use the termsrn"syringomyelia" or "syrinx," in a generic sense to refer to the spectrum of disease that is involvedrnwithout implying endorsement of a specific pathogeneses hypothesisrnSyringohydromelia .caused [associated] with the Chiary malformations.traumaticsyringomyelia,rnidiopathic syringomyelia, and syringomyelia associated with tumors and associated with cervicalrnspondilosisrnObjectivernTo determine common site of spinal cord syrnix on clients who has syrinx on MRIrnTo describe Causes of syringomelia and associated lesions on pediatric agernTo asses syringomeia and associated lesions on adultrnMethodrnThe design of the study will be prospectivecohort studyrnThe study will be conducted on patients 50 patients on selected hospital in Addis Ababa onrnpatients who had spinal and if available brain MRI to study associated lesion compared withrneach and associated lesionrnThe data collected through organized questionnaire The collected data analyzed using SPSSrnversion 20 software and interpretation of the data will be donernvrnResultsrnCM-I wasthe most frequent associated condition (present in 14 patients [28%]), followed byrnspinal tumor (11[22%]) from which( 2[4%])had associated kyphoscolosis,post traumatic (4[8%])rnfrom post traumatic (3[6%] had associated kypho-scoliosis ,chiary II (4[8%]),chiary III(3[6%])rnand only kypho-scolosis (3[6%]) see table 1.No associated brain or spinal cordcondition wasrnfound in 3patients (6%), and syringesin these patients were considered idiopathic. The otherrndiagnosis are (2 [4%])patients had diastomatomelia, two(2[4%]) tethered cord and one kyphosisrn(1[2%])and one infectious cause (1[2%]) There are also two patient had multiple diagnosisrnkyphoscolosis with diastomatomelia (1[2%]) and kyphoscolosis with tethered cord at L3rnvertebra (1[2%])rnConclusionrnSyrinx location within the spinal canal also differed according to associated condition Syringesrnassociated with CM-I, CM-II, or CM III had a more superior cranial extent, usually in therncervical spine. Syringes associated with tethered cord and spinal dysraphism were more likely tornhave their cranial and caudal extents located more caudallyrnThe incidence of kypho scoliosis did not differ significantly by associated condition, with thernexception that patients with chiarymalformation were less likely to have scoliosis on our study