MRI Diagnosis of Adrenal Tumors
- VernacularTitle:肾上腺肿瘤的MRI诊断
- Author:
Hui YE
;
Liming XIA
- Publication Type:Journal Article
- Keywords:
adrenal;
neoplasm;
MRI
- From:
Journal of Practical Radiology
2001;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of adrenal tumors by MRI.Methods The MRI features of adrenal tumors proved pathologically in 26 patients were reviewed,and were comparatively studied with the results of operation and pathology.All patients received pre-and post-contrast MRI scans,the morphology,size,margin,signal intensity and enhancement pattern of the lesion were observed.Results Of 26 adrenal tumors,8 were pheochromocytoma which were encapsulated mass with long T 1 heterogeneous T 2 signal and heterogeneous enhancement,the characteristic manifestations were prominent high signal on T 2WI,heterogeneous signals were showed in haemorrhagia,necrosis,cystic formation.5 cases were metastatic tumors from pulmonary cancers,the shape and signal of tumons were regular or irregular.6 cases were adenomas which were showed as round mass with distinct margin and iso-signal without necrosis and cystic formation.Adenocarcinoma was seen in 4 cases and was manifested as irregular long T 1 heterogeneous T 2 signal and heterogeneous enhancement, the surrounding tissues and blood vessel were involved. Myelolipoma was found in 3 cases and presented as short T 1 and short T 2 signal intensity.Conclusion MRI is valuable in diagnosis and differentiated diagnosis of adrenal tumors, and is important in the delineation of tumor extent and surgical planning.
