however , a tumour in the ethmoids and upper part of the nasal cavity , which expands into the orbit and erodes the roof of the fronto-ethmoid complex or cribriform plate unilaterally in a young patient , is highly suggestive of olfactory neuroblastoma , particularly if this is combined with the magnetic resonance signal characteristics of a vascular tumour .
C0027423
nasal cavity
C0206717
olfactory