Sinonasal esthesioneuroblastoma with intracranial extension: marginal tumor cysts as a diagnostic MR finding.
OBJECTIVE
To determine whether the MR finding of cysts along the intracranial margin of sinonasal esthesioneuroblastomas can be considered to suggest this tumor.


METHODS
MR scans of 54 patients who had sinonasal lesions with intracranial extension were examined specifically for cysts along the intracranial margins of the lesions.


RESULTS
Only 3 of the 54 patients had these cysts, and all 3 of these patients had esthesioneuroblastoma. Surgical pathologic findings of one specimen showed the cyst to be marginally located within the tumor.


CONCLUSIONS
If cysts are seen on MR along the intracranial margin of a sinonasal mass, this finding highly suggests esthesioneuroblastoma.
Department of Radiology, Mount Sinai School of Medicine, City University of New York.
P M
PM
Som
M
M
Lidov
M
M
Brandwein
P
P
Catalano
H F
HF
Biller
D001706:Biopsy; D001921:Brain / Q000473:pathology / Q000601:surgery; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003560:Cysts / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D018304:Esthesioneuroblastoma, Olfactory / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D009666:Nose / Q000473:pathology / Q000601:surgery; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010256:Paranasal Sinuses / Q000473:pathology / Q000601:surgery