Figure 2. Recommended Assessment Schedule Guidelines for Patients With Definitive Treatment of Locally Advanced Head and Neck Cancer.

The recommended follow-up time points are indicated by black rectangles; each time point with expected 5% local and distant events is indicated by orange and blue arrows, respectively. For all 5 groups, when more events occurred, more follow-up visits were recommended. HPC refers to hypopharynx cancer; HPV, human papillomavirus; HPV⁻ OPC, human papillomavirus-negative oropharynx cancer; HPV⁺ OPC, human papillomavirus-positive oropharynx cancer; LC, larynx cancer; and NPC, squamous cell carcinoma of the nasopharynx.