2[F]-fluoro-2-deoxy-D-glucose positron emission tomography is a sensitive tool for the detection of occult primary cancer (carcinoma of unknown primary syndrome) with head and neck lymph node manifestation. - Jungehülsing,M.; Scheidhauer,K.; Damm,M.; Pietrzyk,U.; Eckel,H.; Schicha,H.; Stennert,E. (Otolaryngol Head Neck Surg, 2000)