[Case of cervical monostotic fibrous dysplasia with a large cyst].
We report a rare cervical monostotic fibrous dysplasia with a large cyst in the C2 region in a 55-year-old man complaining of headache. MRI revealed an expanding bony tumor at the C2 spinous process. Gd-DTPA MRI showed slight enhancement around a cystic mass. We performed C2 laminectomy and removed the tumor. It was comprised of soft tissue in the C2 spinous process and right lamina and contained a large septated cyst filled with xanthochromic fluid. Histopathology confirmed fibrous dysplasia with typical woven bony trabeculae. His postoperative course was uneventful and outpatient follow-up detected no deficits. Cervical fibrous dysplasia with a distinct cyst is a rare entity and few cases have been reported in the literature. Such cysts are considered to reflect a tumor regression process. Diagnosis based on MRI and CT study alone is difficult. We suggest that these lesions be surgically resected.
Department of Nuerosurgery, Graduate School of Medicine, Hokkaido University, Sapporo-shi, Japan.
Motoyuki
M
Iwasaki
Kazutoshi
K
Hida
Syunsuke
S
Yano
Yoshinobu
Y
Iwasaki
D001845:Bone Cysts / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D002574:Cervical Vertebrae / Q000473:pathology* / Q000601:surgery*; D005358:Fibrous Dysplasia, Monostotic / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D019786:Gadolinium DTPA; D006801:Humans; D021621:Imaging, Three-Dimensional; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
D019786:Gadolinium DTPA