During external radiation therapy for cervical cancer which lymph node is/ are excluded?
Ans. (c) Internal iliac lymph node The goal of external irradiation in cervical cancer is to sterilize metastatic disease to pelvic lymph nodes and the parametria and/ or to decrease the size of the cervix to allow optimal placement of intracavitary radioactive sources.Patients with known or suspected metastatic disease to periaoic lymph nodes may be considered for extended field irradiation.Lymphatic Spread ln cervical cancer:The cervix is drained by preureteral, Postureteral, and uterosacral lymphatic channels.The following are considered first station nodes: obturator external lilac, hypogastric, parametrial, presacral, and common iliac.Para-aoic nodes are second station, are rarely involved in the absence of primary nodal disease, and are considered metastases .
External iliac lymph node
Common iliac lymph node
Internal iliac lymph node
Sacral lymph node