Fig. 2

Classification according to the number of delineated abdominal lymphatic vessels (n_av). (a) Type 1: n_av < 3 abdominal vessels defineable; (b) type 2: n_av = 4–6 abdominal vessels defineable; (c) type 3 n_av > 6 abdominal vessels or oedematous change/ pronounced ascites obscuring the lymphatic vessels.