Gray zone lymphoma?

Has anyone ever been diagnosed with GZL from excisional biopsy? The original diagnosis was nodular lymphocyte predominant HL. The pet scan showed it is only on one side of my dad’s neck. Here is the review :

Has anyone ever been diagnosed with GZL from excisional biopsy? The original diagnosis was nodular lymphocyte predominant HL. The pet scan showed it is only on one side of my dad’s neck. Here is the review :