The classification proposed by the International Lymphoma Study Group for non Hodgkin&;s lymphoma is know as –
**Core Concept**
The International Lymphoma Study Group proposed a classification system for non-Hodgkin's lymphoma (NHL) to standardize the diagnosis and management of these cancers. This classification system is based on the histological and immunophenotypic characteristics of the lymphoma cells.
**Why the Correct Answer is Right**
The correct answer is based on the World Health Organization (WHO) classification, which is the most widely accepted system for classifying NHL. The WHO classification system is based on the genetic and molecular characteristics of the lymphoma cells, as well as their histological and immunophenotypic features. This system is used to categorize NHL into several subtypes, including diffuse large B-cell lymphoma, follicular lymphoma, and mantle cell lymphoma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not refer to the WHO classification system, which is the most widely accepted system for classifying NHL.
**Option B:** This option is incorrect because it refers to the REAL (Revised European-American Classification) classification system, which is an older system that was replaced by the WHO classification system.
**Option C:** This option is incorrect because it refers to a specific subtype of NHL, rather than a classification system.
**Clinical Pearl / High-Yield Fact**
The WHO classification system is widely used and accepted by pathologists and hematologists, and it is essential for accurate diagnosis and management of NHL.
**Correct Answer:** D. The correct answer is D, WHO classification.