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Abstract

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Purpose : This study was to evaluate the effectiveness of preoperative radiotherapy in
maxillary sinus cancer.
Materials and Methods : A retrospective analysis was done for 42 patients with
maxillary sinus cancer who were treated with radiation with or without surgery from
April 1986 to September 1996. There were 27 male and 15 female patients. Patients' age
ranged from 24 to 75 years (median 56 years). Stage distribution showed 2 in T2, 19 in
T3, and 21 in T4 lesions. The histologic type was squamous cell carcinoma in 38,
undifferentiated carcinoma in 1, transitional cell carcinoma in 1, and adenoid cystic
carcinoma in 2 patients. All patients were treated with radiation initially with a dosage
range of 50.4-70.2 Gy (median 70.2 Gy) before further evaluation of remnant disease.
Eleven patients were given induction chemotherapy (2 cycles of 5-fluorouracil and
cisplatin) concurrently with radiotherapy. Six to eight weeks after radiotherapy with or
without chemotherapy, computerized tomography (CT) of paranasal sinus was taken to
evaluate remnant disease. If the CT finding showed remnant disease, a Caldwell-Luc
procedure was done to get the specimen of suspicious lesions. A radical maxillectomy
was done if the specimen was proven to contain malignancy. In contrast periodic
follow-up examination was done without any radical surgery if the tissue showed only
granulation tissue. Follow-up period ranged from 3 to 92 months with a median 16
months.
Results : Nine (21.4%) patients showed complete response (CR) and 33 patients
(78.6%) showed persistent disease (PER) to initial radiotherapy. Among the 9 CR
patients, 7 patients had no evidence of disease (NED), 1 patient had local failure, and 1
patient had regional failure. Among 33 PER patients, salvage total maxillectomy was
done in 10 patients, and the surgery was not feasible or refused in 23 patients.
Following the salvage radical surgery, 2 patients were NED and 8 patients were PER
status. Overall and disease-free survival rate at 5 years was 23.1% and 16.7%,
respectively. The only factors associated with the overall survival rate was the response
to radiotherapy (p<0.01)
Conclusion : The only factors associated with the overall survival rate was the
response to radiotherapy. We could omit a radical mutilating surgery by preoperative
irradiation in 7 of 42 patients (21.4%) so as to preserve their facial integrity.

Å°¿öµå

Maxillary sinus cancer; Preoperative radiotherapy;

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