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Comparison of Predictive Performance of Three Lymph Node Staging Systems in Colorectal Signet Ring Cell Carcinoma Based on Machine Learning Model
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Evolving insights into penile cancer pathology and the eighth edition of the AJCC TNM staging system
Diego F Sanchez1, Maria Jose Fernandez-Nestosa2, Sofia Cañete-Portillo3
1Instituto de Patología e Investigación, Asunción, Paraguay; School of Medicine, National University of Asuncion, San Lorenzo, Paraguay.
Abstract:
The majority of penile malignant tumors are squamous cell carcinomas. They are pathologically defined as epithelial neoplasms originating in the squamous cells of the inner mucosal lining of the glans, coronal sulcus or foreskin. Tumor location and site of origin is preferentially in glans (70%) followed by foreskin (25%) and coronal sulcus (5%). Despite the variable geographic distribution, pathological features of penile carcinomas in areas of high- and low-risk are similar. Penile tumors are morphologically heterogeneous. A major advance, based on biological, etiological and prognostic factors, is the 2016 WHO classification separating epithelial penile neoplasia, precancerous and invasive, in non-HPV and HPV-related.
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