PMC5889891_01
CT demonstrates lesion occupying ethmoid cells, nasal cavity, and maxillary sinus and extending through the lamina papyracea.
CRIOT2018-5428975.001.jpg
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fig1
T1-weighted MRI with fat suppression demonstrates the lesion extending to the pterigomaxillary fissure.
CRIOT2018-5428975.002.jpg
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fig2
(a) Neoplasia infiltrating surrounding tissue with irregular margins (H&E stain). (b) Atypical epithelial islands with ductal characteristics resembling adenocarcinoma (H&E stain).
CRIOT2018-5428975.003.jpg
PMC5889891_01_CRIOT2018-5428975.003.jpg
fig3
The biopsy resulted in adenocarcinoma (Figures 3(a) and 3(b)).
(a) Positive reaction to the PSA antigen in the epithelial islands, and there is no reaction in the superficial epithelium. (b) Strong expression of the PSA antigen in the ductal cells.
CRIOT2018-5428975.004.jpg
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fig4
The prostate-specific antigen (PSA) was highly positive, and the diagnosis was confirmed as metastatic prostate adenocarcinoma (Figures 4(a) and 4(b)).