Clinical analysis of multiple primary malignancies of the hypopharynx and esophagus.
OBJECTIVE
Because the capability to control squamous cell carcinomas of the head and neck has improved recently, the phenomenon of multiple primary malignancies of that region is now recognized with increasing frequency. We reviewed cases of multiple primary squamous cell carcinomas of the hypopharynx and esophagus with regard to their frequency, incidence, and prognosis.


METHODS
We reviewed 104 cases of hypopharyngeal cancer to determine (1) if and when esophageal cancer occurred, (2) the classification of multiple tumors as metachronous or synchronous, and (3) tumor histology.


RESULTS
In most cases of the metachronous type, esophageal cancer followed hypopharyngeal cancer within less than 3 years. Most cases of hypopharyngeal cancer were at an advanced stage, in contrast to esophageal cancer, which were all early stage. These cases had a poor prognosis despite various treatments causing local disease to be well controlled. Endoscopic esophageal mucosal resection was found to be an effective treatment for esophageal cancer, especially in superficial types.


CONCLUSIONS
The prognosis and mild systemic damage after endoscopic esophageal mucosal resection compare favorably with surgery, radiation, or systemic chemotherapy.
Department of Otorhinolaryngology, Nagoya University School of Medicine, 65 Tsurumai Showaku Nagoya, 466-8560, Japan.
T
T
Kohmura
Y
Y
Hasegawa
H
H
Matsuura
A
A
Terada
M
M
Takahashi
T
T
Nakashima
D004938:Esophageal Neoplasms / Q000473:pathology* / Q000601:surgery / Q000628:therapy; D004947:Esophagus / Q000473:pathology / Q000601:surgery; D006801:Humans; D007012:Hypopharyngeal Neoplasms / Q000473:pathology* / Q000601:surgery / Q000628:therapy; D007013:Hypopharynx / Q000473:pathology / Q000601:surgery; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000601:surgery / Q000628:therapy