Analysis of MRI Diagnosis and Misdiagnosis of Parasellar Cavernous Haemangioma / 现代生物医学进展

ABSTRACT

Objective:To analyze the magnetic resonance imaging (MRI) features of parasellar cavernous haemangioma and improve the diagnosis and differential diagnosis accuracy.Methods:13 patients with parasellar cavernous haemangioma were collected.All the patients were diagnosed by MRI and confirmed by pathology.Based on the pathologic findings,the MRI features were discussed.Results:9 cases presented horizontal dumbbell.The lesions located in the parasellar were larger than the sella turcica.The main body position of the lesions were centered lateral to the parasellar and encasesed the intracavernous internal carotid artery (ICICA).While,1 cases were similar in size and shape.1 case was located in the sella turcica.2 cases was centered lateral to the ICICA.pituitary were detected obscurity in 7 cases and displaced in 6 cases,6 cases appeared extremely high homogeneous intensity on T2-weighted imagesas bright as cerebrospinal fluid signal.Only 5 cases underwent three-dimensional arterial spin labelling perfusion imaging (3D-ASL).The lesions revealed marked hypoperfusion.The cases of misdiagnosis were 9,including 4 cpituitary adenomas and 5 meningiomas.Conclusions:The characteristics of MR images ofparasellar cavernous haemangioma were horizontal bottle gourd form,the main body position of the lesions were centered lateral to the parasellar and encasesed the (ICICA),and their extremely high homogeneous intensity on T2-weighted imagesas bright as cerebrospinal fluid signal.In cases that are equivocal,3D-ASL were useful in differentiating cavernous haemangiomas from parasellar meningiomas,which could decrease mistaken diagnosis.Graspping the imaging feature and differential diagnosis were helpful for the diagnosis of this disease.