MR Findings of Calvarial Eosinophilic Granuloma.
10.3348/jkrs.2001.44.3.281
- Author:
Gi Bok CHOI
1
;
Seok Hyun SON
;
Choong Ki EUN
;
Sung Kun PARK
;
Sang Suk HAN
;
Sun Seob CHOI
;
Seong Min KIM
;
Chang Soo KIM
Author Information
1. Department of Diagnostic Radiology, Pusan-Paik Hospital, Inje University.
- Publication Type:Original Article
- Keywords:
Skull, MR;
Histiocytosis;
Bone neoplasms, MR
- MeSH:
Bone Marrow;
Eosinophilic Granuloma*;
Eosinophils*;
Histiocytosis;
Humans;
Magnetic Resonance Imaging;
Skull
- From:Journal of the Korean Radiological Society
2001;44(3):281-285
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to evaluate the MR findings of calvarial eosinophilic granuloma. MATERIALS AND METHODS: We reviewed the MR imaging studies of nine patients [M:F=3:6, aged 6 -35 (mean, 20.5) years] with pathologically proven eosinophilic granuloma in the calvaria. The findings were evaluated for involvement of the diploic space, changes in adjacent bone marrow, distinction of the transitional zone, pattern of bone destruction, signal intensity and contrast enhancement of the tumor, and contrast enhancement of the adjacent dura. RESULTS: All lesions involved the diploic space, showed no change in adjacent bone marrow, and had a distinct transitional zone. In most (8/9) cases there was asymmetric bony destruction. On T1-weighted images, signal intensities of the tumors varied, while on T2-weighted images, hyperintensity was observed in seven cases, isointensity in one, and hypointensity in one. After the administration of contrast material, enhancement was homogeneous in four cases and inhomogeneous in five. Enhancement of the adjacent dura was demonstrated in all nine cases. CONCLUSION: The characteristic MR findings of calvarial eosinophilic granuloma are variable signal intensity on T1WI, high signal intensity on T2WI, and marked contrast enhancement; in addition, there is a distinct transitional zone, asymmetrical bony destruction, and associated dural enhancement.
