The multicentric potential of urothelial malignancy is well recognized, and the occurrence of urethral neoplasm after cystectomy is attributed to this characteristic of urothelial tumors. Eight instances of tumors in the glandular urethral remnant after subtotal urethrectomy illustrate the necessity of excising the fossa navicularis and urethral meatus when performing urethrectomy.
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Schellhammer et al. (1976) studied this question.
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