Fig. 1From: Postoperative photodynamic therapy as a new adjuvant treatment after robot-assisted salvage surgery of recurrent squamous cell carcinoma of the base of tonguePatient 1. a Pretreatment axial contrast-enhanced fat-suppressed T1-weighed MR image shows small, irregular ulceration on the BOT midline. b Axial contrast-enhanced CT image: the BOT at 20 months post-TORS–post-PDTBack to article page