'Intermediate form' of Non Hodgkin's lymphoma is -
Working formulation of NHL for clinical use is as follows:
Low grade :      


small lymphocytic


Follicular, predominantly small cleaved cell


Follicular mixed


Intermediate Grade :        
1. Follicular predominantly large cell
2. Diffuse small, mixed, as well as large cell.
High grade :                       


Large cell immunoblastic


Lymphoblastic


Small non-cleaved cell.


Note that all varieties of diffuse fall in the intermediate grade category only.
Small noncleaved cell
Diffuse, small cleaved cell
Lymphoblastic
Large cell immunoblastic