WHO classification

WHO classification

Surgical pathology A classification of non-Hodgkins lymphomas based upon an updated version of the REAL classification system; the WHO classification system is currently accepted as the authoritative standard for diagnosing lymphomas; it does not group lymphomas into prognostic categories, but, rather, considers each lymphoma as a separate disease; the WHO system uses morphology, immunophenotyping, and genotyping to classify the malignancy, which is often graded, typically from I to IV. See Non-Hodgkin's lymphoma, REAL classification. Cf Hodgkin's disease, Working formulation.

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Patient discussion about WHO classification.

Q. How are Heart Murmurs Classified? What are the characteristics of different heart murmurs?

A. Murmurs can be classified by different characteristics: timing, shape, location, radiation, intensity and more. Timing refers to whether the murmur is a systolic or diastolic murmur. Shape refers to the intensity over time. Location refers to where the heart murmur is auscultated best. The general rule of thumb is that the sound radiates in the direction of the blood flow. Intensity refers to the loudness of the murmur, and is graded on a scale from 0-6/6.