Comparative analysis of MRI findings and clinical pathology for spine epidural angiolipomas

English Keywords:Intraspinal  Epidural  Angiolipomas  Magnetic resonance imaging  Pathology

English Abstract:

  【Abstract】 Objectives: To investigate the MRI features of spine epidural angioliomas and its association with clinical pathology. Methods: Clinical data and MRI findings of 2 patients with spine epidural angioliomas were analyzed retrospectively. The correlations between image findings and pathological results including cellular component, heteromorphism and immunohistochemical consequence were evaluated. Results: Angiolipomas were composed of tenuity vascular and mature adipocyte, which　located in spine epidural and showed dumbbell-shaped, and adjacent intervertebral foramen were evidenced enlarged. Compared with other tumors sited in spine epidural such as liparomphalus, the ratio of blood vessel and fat determined the MRI signals： isointense or hyperintense signals on T1WI, hyperintense signals on T2WI. The tumors′ signals increased or decreased on STIR, while increased in enhanced MRI. Conclusions: The size, morphology, MRI signal of angiolipomas and the association with the adjacent structure can be clearly displayed on MRI. STIR and enhanced MRI are valuable for distinguishing from other disorders．