The general principle I follow is if I can include it safely, I would. Otherwise, would skip most of it (lymphocele). If lymphocele is the site of positive pathological node, then include it in CTV.

A seroma is a collection of serum that typically occurs at an area of tissue disruption, including surgical sites or incisions. They are filled with clear fluid that is produced by cells, but generally do not typically have high cellularity. Post-operative seromas are associated with increased risk ...

With IMRT planning for a post-operative endometrial case, you can almost always cover any visible lymphocele safely. So I routinely would as, in my mind, if the concern is for covering the regions of lymph nodes, then an area where lymph fluid is leaking retroperitoneally could be a location where c...