Synonyms
Clear cell squamous cell carcinoma
Definition
Penile clear cell carcinoma (PCCC) is an aggressive human papillomavirus (HPV)-related tumor predominantly composed of clear cells.
Clinical Features
This very unusual tumor shows regional metastases and a tumor mortality exceeding 20% of the cases (Sanchez et al. 2016). PCCC occurs as large, irregular masses on the foreskin or glans.
Microscopy
PCCC has a predominant nesting growth pattern with comedonecrosis in central part of nests and comedo-like necrosis; there are clear cell features in cells with irregular or eccentric nuclei. The presence of HPV is diffused throughout the tumor. Intraepithelial neoplasia with warty or basaloid features can be found.
Differential Diagnosis
Warty Carcinoma with Prominent Clear Cells
The main differential feature is the papillary pattern of growth in warty carcinoma that is not observed in PCCC, where the growth pattern is in solid sheets or nests.
Basaloid Carcinoma
The presence of nesting...
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Liegl, B., & Regauer, S. (2004). Penile clear cell carcinoma: A report of 5 cases of a distinct entity. The American Journal of Surgical Pathology, 28(11), 1513–1517.
Sanchez, D. F., Rodriguez, I. M., Piris, A., Cañete, S., Lezcano, C., Velazquez, E. F., Fernandez-Nestosa, M. J., Mendez-Pena, J. E., Hoang, M. P., & Cubilla, A. L. (2016). Clear cell carcinoma of the penis: An HPV-related variant of squamous cell carcinoma: A report of 3 cases. The American Journal of Surgical Pathology, 40(7), 917–922.
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Colecchia, M., Bertolotti, A. (2020). Penile Clear Cell Carcinoma. In: Raspollini, M.R., Lopez-Beltran, A. (eds) Uropathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-41894-6_4880
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DOI: https://doi.org/10.1007/978-3-030-41894-6_4880
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