THE NEW WHO TUMOR CLASSIFICATION

Table of Contents

THE NEW WHO TUMOR CLASSIFICATION

TUMOR GRADING

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HISTOLOGIC MALIGNANCY

GLIOMA (ASTROCYTOMA)GRADING SYSTEM:

HIGH-GRADE ASTROCYTOMASMEDIAN SURVIVAL:

ASTROCYTOMAFive Year Survival

BIOLOGIC MALIGNANCY:

CNS NEOPLASM-GLIALPrognostic Factors

WHO Classification

THE NEW WHO

CORRELATION

ASTROCYTIC NEOPLASMSWHO Classification

WHO GRADING

The New WHOClassification of Brain Tumors

“BENIGN” ASTROCYTOMA

PATTERN ANALYSIS

ASTROCYTOMA:Circumscribed

PILOCYTIC ASTROCYTOMA

PILOCYTIC ASTROCYTOMA

PILOCYTIC ASTROCYTOMARadiology

PATHOLOGY

GRADING GLIOMAS51 PILOCYTIC

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ASTROCYTOMAFive Year Survival

PILOCYTIC ASTROCYTOMA

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PILOCYTIC ASTROCYTOMA(Juvenile Pilocytic)

WHO GRADE I

CIRCUMSCRIBED vs DIFFUSE

ASTROCYTOMAS

PLEOMORPHIC XANTHOASTROCYTOMA

PLEOMORPHIC XANTHOASTROCYTOMA

PLEOMORPHIC XANTHOASTROCYTOMA

ASTROCYTOMAS

PATTERN ANALYSISNeoplasm

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ASTROCYTOMA:DIFFUSE(Fibrillary, protoplasmic, etc.)

ASTROCYTOMARadiologic Grading

BENIGN ASTROCYTOMA:

Benign - Diffuse

MODES OF SPREAD

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SPREAD ALONG TRACTS:

“MALIGNANT” ASTROCYTOMA:

GBM

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GLIOBLASTOMA MULTIFORME(Malignant Astrocytoma)

GLIAL TUMORSMR Grading*

GRADING SYSTEMSSem Rad Onc (1991); 1: 2-9

NEUROEPITHELIAL TUMORSWHO Classification

NEOPLASMS OF THE MENINGESWHO Classification

MENINGEAL TUMORSWHO Grades

MENINGIOMA“Malignant Meningioma”

HEMANGIOPERICYTOMA(HPC)

DYSEMBRYOPLASTIC NEUROEPITHELIAL TUMOR (DNT)

DYSEMBRYOPLASTIC NEUROEPITHELIAL TUMOR (DNT)

THE NEW WHO

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CORRELATION

WHO GRADE I

Email: jsmirnio@usuhs.mil

Home Page: http://rad.usuhs.mil

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Unless otherwise indicated, all text and graphics Copyright 1999 by: J.G. Smirniotopoulos, M.D.