Running title: Hypopharyngeal adenoid cystic carcinoma following previous squamous cell carcinoma
Ning Jia, MD1,2, Yu Chen, MD3, Boju Pan, MD4, Chunmei Bai, MD1 and Yingying Zhu, MD5
1Department of Medical Oncology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
2Gansu Cancer Hospital, Lanzhou, Gansu, China
3Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
4Molecular Pathology Research Center, Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
5Department of Otolaryngology-Head and Neck Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China