RESUMO
Objective To summarize the clinical and MRI features of ruptured intracranial dermoid cysts to improve its diagnosis.Methods Totally 6 patients with ruptured intracranial dermoid cyst confirmed pathologically from March 2005 to April 2016 had their clinical and MRI data analyzed and compared on lesion location,morphology,size,growth and MRI features.Results All the 6 patients had solitary cysts,of which,there were 3 ones in the parasellar region,2 ones in anterior cranial fossa and 1 case in posterior fossa fourth ventricle.MRI showed non-uniform signals in the 6 patients,of whom,4 ones had short T1,long T2 signals,2 ones had long T1,long T2 signals intermixed with short T1,short T2 dot signals.The 2 patients with long T1,long T2 signals had grainy appearance,one of whom showed fat-fluid level and had low signals such as short T1 signals of the fat droplet adjacent to the cerebral sulcus and fat saturation images.Enhancement scanning found 2 cases of minimal peripheral contrast enhancement,1 of whom showed epedyma enhancement.Conclusion The clinical and MRI features of ruptured intracranial dermoid cyst are characteristic,and MRI is of significance for its diagnosis and differential diagnosis.
RESUMO
Objective To summarize the clinical and MRI features of ruptured intracranial dermoid cysts to improve its diagnosis.Methods Totally 6 patients with ruptured intracranial dermoid cyst confirmed pathologically from March 2005 to April 2016 had their clinical and MRI data analyzed and compared on lesion location,morphology,size,growth and MRI features.Results All the 6 patients had solitary cysts,of which,there were 3 ones in the parasellar region,2 ones in anterior cranial fossa and 1 case in posterior fossa fourth ventricle.MRI showed non-uniform signals in the 6 patients,of whom,4 ones had short T1,long T2 signals,2 ones had long T1,long T2 signals intermixed with short T1,short T2 dot signals.The 2 patients with long T1,long T2 signals had grainy appearance,one of whom showed fat-fluid level and had low signals such as short T1 signals of the fat droplet adjacent to the cerebral sulcus and fat saturation images.Enhancement scanning found 2 cases of minimal peripheral contrast enhancement,1 of whom showed epedyma enhancement.Conclusion The clinical and MRI features of ruptured intracranial dermoid cyst are characteristic,and MRI is of significance for its diagnosis and differential diagnosis.