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  • Title: Cytopathological features of warty (condylomatous) carcinoma of the penis: a case report and distinction from other verruciform penile tumors.
    Author: Hayashi T, Haba R, Kushida Y, Kadota K, Katsuki N, Miyai Y, Bando K, Shibuya S, Funamoto Y, Kakehi Y.
    Journal: Diagn Cytopathol; 2010 Nov; 38(11):841-5. PubMed ID: 20301209.
    Abstract:
    Warty (condylomatous) carcinoma (WC) is a rare specific variant of invasive squamous cell carcinoma that shows hybrid features of condyloma with invasive cell carcinoma. As compared with conventional squamous cell carcinoma, WC tends to run a less aggressive clinical course. A case is presented here in which squash smears of a penile foreskin tumor in a 65-year-old male revealed small cohesive clusters and sheets of tumor cells in papillary configurations. The neoplastic cells were polygonal to elongated and contained oval nuclei, coarse chromatin pattern, and distinct nucleoli. Nuclear pleomorphism and loss of nuclear polarity were observed. Characteristically, there were also many koilocytes demonstrating mild to moderate nuclear atypia and perinuclear cytoplasmic halos. A cytologic diagnosis of a verruciform penile tumor was suggested. Histologic examination of the tumor showed a hyper-parakeratotic arborizing papillomatous growth with thin fibrovascular cores and the tips were variably rounded or tapered. Obvious koilocytic cytopathic change, nuclear pleomorphism, and focal stromal invasion were observed. Immunohistochemically, the tumor cells showed diffuse and strong membranous staining for cytokeratin (AE1/AE3) while the MIB-1 and p53 immunoreactive cells were confined to the basal areas of the papillae. No lymphovascular invasion was detected in D2-40 or elastic Van-Gieson stains. On the basis of the overall features, we confirmed a final diagnosis of penile WC. We demonstrated here for the first time the cytopathological features of penile WC with emphasis on differential diagnostic considerations.
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