Stereotactic body radiation therapy for nonmetastatic lung cancer: an analysis of 75 patients treated over 5 years.
OBJECTIVE
Non-small-cell lung cancer (NSCLC) may not be medically operable even in patients with surgically resectable disease. For patients who either refuse surgery or are medically inoperable, radiation therapy may be the best therapeutic choice. Stereotactic body radiation therapy (SBRT) employs external fixation and hypofractionation to deliver a high dose per fraction of radiation to a small target volume.


METHODS
Retrospective review of 75 patients treated over 5 years at Staten Island University Hospital as definitive treatment for NSCLC or presumed NSCLC. Patients received a median of 5 fractions of 8 Gy per fraction over 27 days.


RESULTS
Overall 1-, 2-, and 5-year actuarial survivals were 63%, 45%, and 17%. Patients with a gross tumor volume (GTV) less than 65 cm3 enjoyed a longer median survival (25.7 vs. 9.9 months, p < 0.003), and at 5 years, the actuarial survival for the patients with GTVs less than 65 cm3 was 24% vs. 0% for those with GTVs larger than 65 cm3.


CONCLUSIONS
Stereotactic body radiation therapy as delivered was ineffective for curing the patients whose GTVs were larger than 65 cm3. SBRT was promising for those with GTVs less than 65 cm3.
Beitler
Jonathan J
JJ
Department of Radiation Oncology, Staten Island University Hospital, Staten Island, NY, USA.
Badine
Edgard A
EA
El-Sayah
Danny
D
Makara
Denise
D
Friscia
Phillip
P
Silverman
Phillip
P
Terjanian
Terenig
T
D000368:Aged; D000369:Aged, 80 and over; D002289:Carcinoma, Non-Small-Cell Lung / Q000401:mortality / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D008875:Middle Aged; D011879:Radiotherapy Dosage; D012062:Relative Biological Effectiveness; D012189:Retrospective Studies; D013238:Stereotaxic Techniques