Key Points:
- Regional metastases in hypo-pharyngeal cancer such as lymphatic
metastases are easy to be found at the time of tumor diagnosed. Though
there is a high incidence rate of lymphatic metastases; the detection
of distant metastases is still rare in hypo-pharyngeal carcinoma.
- Only 8.5% patients were observed to have distant metastases in head
and neck squamous cell carcinoma. Among them, 16.3% of the patients
suffered from hypo-pharyngeal carcinoma. Although distant metastases
in hypo-pharyngeal carcinoma are not common, they play an important
role.
- Population-level estimates for prognosis among patients including
newly diagnosed hypo-pharyngeal carcinoma and lung metastases or other
organs’ metastases are extremely rare.
- Our study provides insight into the epidemiology of lung metastases in
patients with newly diagnosed hypo-pharyngeal cancer.
- When the tumor is diagnosed, we should pay close attention to the sex,
race, tumor size and histological grade in order to quickly detect the
distant metastases.