Hypoxia in oncology. (a) Three regions around a blood
vessel in
a tumor. Image courtesy Iris Kort. (b) Association between tumor hypoxia
and overall survival in advanced cancer of the uterine cervix. Reprinted
with permission from Vaupel et al., Association between Tumor Hypoxia
and Malignant Progression in Advanced Cancer of the Uterine Cervix. Cancer Res., 1996, 56, 4509–4515.
Copyright 1996 American Association for Cancer Research. (c) Clinical
response to 5-ALA PDT treatment in tongue/floor of mouth tumor patients.
Reproduced with permission from Busch et al., Lesion oxygenation associates
with clinical outcomes in premalignant and early stage head and neck
tumors treated on a phase 1 trial of photodynamic therapy. Photodiagnosis Photodynamic Therapy2018, 21, 28–35. Copyright 2018 Elsevier.