New WHO classification of kidney tumors integrates molecular diagnostics

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New WHO classification of kidney tumors integrates molecular diagnostics
CarcinomaCellDiagnostic
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Renal tumor pathology has evolved considerably, expanding from two main types of renal malignant tumors to over 20 distinct types.

Xia & He Publishing Inc.Jun 18 2024 Diagnostic criteria have advanced from purely morphological features to include histochemistry, immunohistochemistry , and molecular genetics. The World Health Organization and the International Society of Urologic Pathology have been instrumental in updating these criteria, resulting in a comprehensive framework essential for accurate diagnosis, effective treatment, and improved patient outcomes.

The 2022 classification reorganizes renal epithelial tumors hierarchically, starting with benign tumors followed by malignant ones. This new structure aligns with a unified approach across all WHO Blue Books. Tumors are categorized based on their morphological and cytological features into clear cell renal tumors, papillary renal tumors, oncocytic and chromophobe renal tumors, collecting duct tumors, other renal tumors, and molecularly defined renal carcinomas.

Related StoriesRCC-Not Otherwise Specified : Replaces the term RCC-Unclassified for tumors that do not fit into other categories, reflecting a more precise approach to categorizing renal tumors.

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Carcinoma Cell Diagnostic Diagnostics Genetics IHC Immunohistochemistry Malignant Molecular Diagnostics Pathology Renal Cell Carcinoma Research Tumor

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