ANATOMY

Epitrochlear Nodes are located in the subcutaneous connective tissues on the medial side of the Elbow.  Epitrochlear Lymph Nodes are placed medial to the Basilic Vein (superficial vein of upper limbs) above the Medial Epicondyle of the Humerus up to 4 to 5 cm. Their Afferent Lymph Nodes (start from Lymph Sinuses of Medullary portion of Lymph Nodes) drain the lymphatic from the Middle, Ring and Little fingers, medial region of Hand, superficial area of the Ulnar part of the forearm. They are in free communication with the other lymphatic vessels of the Forearm.

Their Efferent Lymph Vessels (enter all parts of the Periphery of the Lymph Nodes) running along with the Basilic Vein join the deeper vessels.

CLINICAL SIGNIFICANCE

Acute Epitrochlear Lymphadenitis (Cat- Scratch disease) is one of the pathologies of the Epitrochlear Lymph Nodes. It involves the painful swelling along the medial aspect of Elbow. In Cutaneous Melanoma, Epitrochlear Lymph nodes are included in a category known as Interval Lymphadenopathies. These lymph nodes are also considered to be In Transit target by tumor cells that spread Primary Melanoma Lesions on Forearms, Wrist or Hands.