title: Multiple annular lung metastases from a nasopharyngeal carcinoma.
authors.affiliation: Department of Head and Neck Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China;
authors.forename: Ping
authors.initials: P
authors.lastname: Ai
authors.forename: Lingli
authors.initials: L
authors.lastname: Tu
authors.forename: Lan
authors.initials: L
authors.lastname: Sun
authors.forename: Kaihong
authors.initials: K
authors.lastname: Deng