Table 2.

Proposal for the definition and severity grading of postoperative lymphatic leakage after radical inguinal lymph node dissection (RILND)

Definition of lymphatic leakage Persistent secretion of lymphatic fluid (≥ 50 ml/24 h) from the surgically inserted drains (lymphatic drainage) or from the wound (lymphorrhea, lymphocutaneous fistula) for more than 5 days or, after drainage removal, postoperative fluid accumulation within the cavity of resection provided the absence of wound dehiscence (lymphocele, lymphocyst, seroma) limiting the adherence of the wound surfaces.
Grade	A	Persistent lymphatic leakage >5 postoperative days, < 10 postoperative days. Absence of other wound complications
	B	Persistent lymphatic leakage ≥ 10 postoperative days or lymphoceles requiring interventions
	C	Lymphatic leakage leading to reoperation or subsequent conflict with medical measuresa or return to normal lifeb
	0	No lymphocele

^aFor example, delay of planned adjuvant treatment (yes/no, delay by × days)

^bAssessment by the Reintegration to Normal Living (RNL) Index proposed