Metastasis to Paranasal Sinuses from Carcinoma of Prostate: Report of a Case and Review of the Literature

<div>(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.</div>

Case Reports in Otolaryngology

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Figure 4

Figure 4: Metastasis to Paranasal Sinuses from Carcinoma of Prostate: Report of a Case and Review of the Literature 