L. Thomas et al., EVALUATION OF WHOLE ABDOMINAL IRRADIATION IN OVARIAN-CARCINOMA WITH A4 ORTHOGONAL FIELDS TECHNIQUE, International journal of radiation oncology, biology, physics, 30(5), 1994, pp. 1083-1090
Citations number
43
Categorie Soggetti
Oncology,"Radiology,Nuclear Medicine & Medical Imaging
Purpose: The purpose of this study is to evaluate the toxicity and the
results of abdominopelvic irradiation with a four orthogonal field's
technique in patients with ovarian carcinoma. Methods and Materials: B
etween May 1981 and December 1990, 167 patients with ovarian carcinoma
have been treated with whole abdominal irradiation: 62 patients with
no or minimal residual disease < 2 cm after initial surgery (group 1)
and 105 patients with no residual disease or macroscopic residual dise
ase < 2 cm assessed by second-look surgery after incomplete debulking
surgery and cisplatin-based polychemotherapy (group 2). Irradiation wa
s performed by a four orthogonal field's technique. Thirty grays were
given with a 25 MV photon beam (1.5 Gy/fraction/day, 20 fractions over
30 days). Boosts were performed in 50 cases (median dose of 15 Gy). R
esults: With a median follow-up of 68 months, the 5-year actuarial sur
vival rate was 50% in the entire group, 67% in group 1, 40% in group 2
, and 84% in T1, 61.5% in T2, 38% in T3. Five-year actuarial survival
was analyzed according to the residuum: (a) after initial surgery (no
residual disease: 70%, residual disease: 36.5%), (b) after second-look
surgery: 76% in patients with a negative second look, 66% in patients
with microscopic residual disease, 22% in patients with macroscopic r
esidual disease and secondary surgical reduction, and 10% in patients
with small unresectable nodules. Nine percent of the patients failed t
o complete irradiation acute side effects related. Five percent requir
ed surgery for bowel obstruction. Conclusion: The abdominopelvic irrad
iation with this four orthogonal field's technique was associated with
tolerable acute toxicity and a low risk of serious late complications
. Similar late results to have been reported whole abdominal irradiati
on with chemotherapy in patients with negative or microscopic residual
disease after surgery. Randomized trials comparing these two adjuvant
treatments are warranted.