| http://www.w3.org/ns/prov#value | - imal drainage system involvement (?? conjunctival involvement but not including nasopharynx)T3: Lymphoma with pre-septal eyelid involvement (defined above) ?? orbital involvement ?? conjunctival involvementT4: Orbital adnexal lymphoma extending beyond orbit to adjacent structures such as bone and brainT4a: Involvement of nasopharynxT4b: Osseous involvement (including periosteum)T4c: Involvement of
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