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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A most malignant form of NHL is -
assistant
The correct answer is  Diffuse large cell lymphoma is most malignant, amongst the options provided. Although Follicular large cell and Diffuse varieties are both classified in the intermediate grade of the 'working formulation of NHL' in general, "lymphomas with a follicular histological pattern are of a Lower grade (longer survival times) than those with a diffuse pattern".
Following information have been added in 8th  of Robbins

Diffuse large B-cell lymphoma is the most common form of Non-Hodgkin lymphoma.