Table 1 Patients’ characteristics (n = 33)
No. of patients | Percentage (%) | |
|---|---|---|
Median age (years) | 53(32–72) | |
Gender | ||
Male | 22 | 66.7 |
Female | 11 | 33.3 |
Primary tumor position | ||
Nasopharynx | 12 | 36.4 |
Hypopharynx | 5 | 15.2 |
Paranasal sinus | 5 | 15.2 |
Oral cavity | 3 | 9.1 |
Larynx | 3 | 9.1 |
Neck | 3 | 9.1 |
Cervical lymph node metastases | 2 | 6.1 |
Tumor pathology | ||
SCC | 25 | 75.8 |
Other | 8 | 24.2 |
Implantation site | ||
Primary tumor | 22 | 66.7 |
Lymph nodes | 11 | 33.3 |
Previous surgery | 23 | 69.7 |
Previous chemotherapy | 20 | 60.6 |
Courses of previous radiotherapy | ||
Two | 29 | 87.9 |
Three | 4 | 12.1 |
Cumulative dose of the previous radiotherapy (Gy) | ||
50–100 | 11 | 40.7 |
> 100 | 16 | 59.3 |
Median dose | 110(60–160) | |
Median time from radiotherapy to seed implantation (months) | 12.5(1.3–446) | |