Abstract
Giant ovarian teratoma: an important differential diagnosis of pelvic masses in children.
Highlights
A indicates that the tumor is limited to the nasal cavity; stage B indicates that it involves only the nasal cavity and paranasal sinuses; and stage C indicates that it extends beyond the stage B limits
MRI is superior to Computed tomography (CT) in the evaluation of recurrence after craniofacial resection, because of its greater ability to differentiate fibrous scar tissue from residual or recurring neoplasia[6]
Cysts in the intracranial margin of the tumor have been reported in cases of olfactory neuroblastoma
Summary
A indicates that the tumor is limited to the nasal cavity; stage B indicates that it involves only the nasal cavity and paranasal sinuses; and stage C indicates that it extends beyond the stage B limits. An MRI scan provides more accurate information on the extent of the tumor, especially in terms of intracranial and orbital involvement. On MRI, the majority of olfactory neuroblastomas present a signal that is (in relation to that of muscle tissue) hypointense in T1-weighted sequences and hyperintense in T2-weighted sequences, as well as showing intense enhancement in contrast-enhanced sequences[6,7]. Cysts in the intracranial margin of the tumor have been reported in cases of olfactory neuroblastoma.
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