[Radiation therapy of carcinoma of the hypopharynx and recurrence in the epipharynx and mesopharynx].
The role that radiation therapy plays in the prophylaxis of an epi-and mesopharyngeal recurrence of a hypopharyngeal cancer remains undefined. Because of this 48 patients with a hypopharyngeal cancer, who had undergone radiation therapy from 1975 through 1987 at Chiba University Hospital, have been analyzed retrospectively. The 5-year-survival was 17% and an epi- or a mesopharyngeal recurrence was found in 8 patients. A radiation dose of more than 1350 ret seemed to prevent a recurrence in these regions, although it must be further studied as to whether an increase of the radiation field to include the epipharynx can be effectively improved the recurrence-free survival rate.
Itami
J
J
Dept. of Radiology, Chiba Univ. Hospital.
Ogata
H
H
Yoshida
H
H
Yasuda
S
S
Hayasaki
K
K
Kaneko
T
T
Arimizu
N
N
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D007012:Hypopharyngeal Neoplasms / Q000401:mortality / Q000473:pathology / Q000532:radiotherapy*; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000517:prevention & control*; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D009959:Oropharyngeal Neoplasms / Q000517:prevention & control*; D010610:Pharyngeal Neoplasms / Q000517:prevention & control* / Q000532:radiotherapy*; D011879:Radiotherapy Dosage; D012008:Recurrence; D012189:Retrospective Studies