**2.1 Lymphatic drainage of the uterus**

Unlike superficial tumours, such as melanoma, the physiology of lymphatic drainage in deeper/visceral tumours is not well established [8]. Uterine drainage, as well as being bilateral, is therefore complex [9]. Anatomically, three segments of uterine lymphatic drainage have been established:


Physiologically, there are two main lymphatic pathways and a third accessory for uterine drainage [5]:


cranially over the course of the mesoureter. In these cases, SLN is usually observed in the internal iliac, common iliac or presacral region.

3.A third pathway has been described, the *infundibular pelvic*, but it is very rare except with fundal injections. This pathway has mainly fundal drainage towards the broad ligament and paraaortic chain [11].
