Overlapping volumes in re-irradiation for head and neck cancer – an important factor for patient selection

Radiation Oncology

Table 1 Patient and treatment characteristics at first presentation. Tumour stage according to American Joint Committee on Cancer (AJCC) Cancer Staging Manual 7th edition

Patient and treatment characteristics at first presentation	Number	Percent (range)
Male	35	65
Female	19	35
Median age (years)	59	(33–81)
Tumor site
Larynx	6	11
Oropharyngeal^a	18	33
Nasopharyngeal	1	2
Hypopharyngeal	5	9
Oral cavity	17	31
Unknown primary	2	4
Sino/nasal	3	6
Salivary gland	2	4
Histology
Squamous cell carcinoma	46	85
Adenoid cystic carcinoma	5	9
Other^b	3	6
Tumor Stage
I	5	9
II	11	20
III	7	13
IVa	28	52
IVb	3	6
T-stage
0	2	4
1	9	17
2	22	41
3	4	7
4	17	31
Median treatment dose (Gy)	68	(60–79)

^aAssociation with human papilloma virus (HPV): 11 HPV-positive, 2 HPV-negative, 5 HPV status unknown
^b1 salivary duct cancer, 1 undifferentiated non-keratinizing cancer, 1 adenocarcinoma

ISSN: 1748-717X