Brachial plexopathy may be developed by direct trauma, compression, infection, radiation, tumors and other numerous causes. The brachial plexopathy are infrequently found in patients with carcinoma, which usually invade the lower trunk or medial
cord of
brachial plexus by contiguous spread from the lung such as Pancoast tumor. In rare cases, a distant metastatic tumor may involve the brachial plexus, which also predominantly invade to the lower trunk and medial cord, that is explained by the
location
of the lateral group of axillary lymph node as frequent metastatic sites. Herein we report a rare case of group of axillary lymph node as frequent metastatic sites. Herein we report a rare case of brachial plexopathy, in which strict upper trunk
of
plexus was involved by distant metastatic undifferentiated carcinoma cell to the lymph node.
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