Introduction:
Lung cancer is the most prevalent form of cancer, and the leading cause of cancer-related mortality in both men and women. in 2018, the incidence and mortality rates of lung cancer showed an increase, compared to the rates reported in 2012. It is estimated a total of 2.09 million new cases, accounting for 11.6% of all cancer cases, and 1.76 million deaths, representing 18.4% of all cancer-related deaths. Additionally, it ranks as the third most common cancer type and the second most common cause of cancer death among women specifically. (1)
When lung cancer is discovered, it is usually in metastatic stage IV. Distant metastasis is estimated to be 30–40% at the time of diagnosis of non-small-cell lung cancer (NSCLC) (2). Axillary lymph node metastasis (ALNM) from lung cancer is a rare occurrence, affecting less than 1% of patients, and it is classified as a distinct type of distant lymph node metastasis according to the 8th grading system. (3,4)
This case report shows a case of 73-year-old man with axillary lymph node metastasis from squamous cell lung cancer, and provides valuable insights into the unique instance of axillary lymph node metastasis from squamous cell lung cancer, shedding light on the diagnostic challenges associated with such cases.