Additional file 2: Figure S1. of Carbon ion therapy (C12) for high-grade malignant salivary gland tumors (MSGTs) of the head and neck: do non-ACCs profit from dose escalation?

PFS according to histologic subtype. AC: adenocarcinoma; ACI: acinic cell carcinoma; MEC: mucoepidermoid carcinoma. Note only the most frequent subtypes are shown to improve visibility (ODP 16 kb)