Inguinal Lymph Node Anatomy
•Superficial and deep groups,
•Anatomically separated by the fascia lata of the
thigh.
•Superficial Group
•composed of 4 to 25 lymph nodes that are
situated in the deep membranous layer of the
superficial fascia of the thigh (Camper's fascia).
Divided into five anatomic groups
(1)Central nodes around the Saphenofemoraljunction
Horizontal Groups:
(2)Superomedialnodes around the Superficial
external pudendaland Superficial epigastricveins,
(3)Superolateralnodes around the Superficial
circumflex vein
Vertical Groups:
(4)Inferolateralnodes around the Lateral femoral
cutaneous and Superficial circumflex veins,
(5)Inferomedialnodes around the Greater saphenous
vein
•Deep Group
•fewer and lie primarily medial to the femoral vein
in the femoral canal.
•The node of Cloquet is the most cephalad of this
deep group and is situated between the femoral
vein and the lacunar ligament
•The external iliac lymph nodes receive drainage from
the deep inguinal, obturator, and hypogastric groups.
In turn, drainage progresses to the common iliac and
para-aortic nodes
Sentinel Node
There is a node or group of nodes -lying between the
superficial external pudendalvein and the
superficial epigastricvein -where the earliest
metastasis from a penile tumor will occur consistently
Indications for Inguinal
LymphnodeDissection
•Penile carcinoma
•Vulval carcinoma
•Melanoma with involvement of inguinal lymph nodes
•Carcinoma affecting lower limb