Laparoscopic lymph node biopsy for lymphoma with a novel use of indocyanine green fluorescence in a 66-year-old male patient

•First report in literature concerning the use of indocyanine green (ICG) for laparoscopic lymph node biopsy•Periaortic and iliac lymph nodes visualized at PET as pathological, at laparoscopy turned out to be stained up by ICG.•Deep lymph nodes staining with ICG is possible by means of a preoperative injection of an ICG solution into the inguinal regions.•ICG-fluorescence seems to offer a useful, expeditious, and easy reproductible method for pathologic lymph node [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19]] laparoscopic lymph node biopsy (LLB).