For a MALT lymphoma involving the preseptal orbit only, woud you treat the entire orbit or limit the CTV to the preseptal orbit?   

MALT lymphomas of the orbit are one of the extranodal sites for which not treating the entire organ is appropriate, given good outcomes and increased toxicity with the treatment of the entire orbit. So, would give CTV and PTV margin to the imaged lesion. For conjunctival lesions, the entire conjunct...