Do you treat the contralateral RP nodes up to the base of skull in a node-negative neck if the primary tumor involves any hypopharyngeal subsite?

An older Red Journal article (Chao et al., 2002) provides some recommendations on RP coverage on the basis of recurrence data/ nodal involvement at presentation as stratified by subsite. The tables in this paper have many strata, however briefly according to the data compiled in this paper of the patients reported none had clinically involved nodes in the suprglottic larynx or pyriform sinus. Recommendations for (pre-op) RT dose were ~ 70 Gy for CTV 1 and ~ 60 Gy for CTV 2; for the HPX subsite the authors recommend:

T1-2 N0 - CTV 1: GTV+margin; CTV 2: Ipsilateral + Contralateral (II-IV)

T3-4N1-3 - CTV 1: (GTV+margin)+ Ipsilateral neck (II-IV, RP); CTV 2: Contralateral neck (II-IV)

N2c disease - CTV 1: (GTV+margin)+ Ipsilateral&Contralateral (I...