Detection of pharyngeal cancer in the overall population undergoing upper GI endoscopy by using narrow-band imaging: a single-center experience, 2009-2012.
BACKGROUND
Nonmagnifying observation by using narrow-band imaging (NBI) is useful for detecting pharyngeal lesions. Magnifying observation by using NBI can distinguish between cancerous and noncancerous lesions and is therefore useful for the early detection of pharyngeal cancer.


OBJECTIVE
To evaluate the usefulness of observation of the pharynx by using NBI in the overall population undergoing upper GI endoscopy.


METHODS
Retrospective study.


METHODS
Single tertiary referral center.


METHODS
A total of 11,050 upper GI endoscopies between January 2009 and December 2012.


METHODS
Observation of the pharynx by using NBI.


METHODS
The rate of detection of pharyngeal cancer, the rates of detection according to the reason for endoscopy, and the types of cancers detected.


RESULTS
Thirty-eight cancerous lesions were detected in 29 patients (0.26%, 29/11,050). The rate of detection of pharyngeal cancer was significantly higher in patients with a history of head and neck cancer (9.7%, 3/31) or a history of esophageal cancer (3.5%, 10/282). In patients undergoing endoscopy for screening, pharyngeal discomfort, and a history of gastric cancer, the rates of detection of pharyngeal cancer were 0.11% (10/8872), 1.1% (3/265), and 0.19% (3/1600), respectively. Two patients (6.9%) were female. One had a history of esophageal cancer, and the other had pharyngeal discomfort.


CONCLUSIONS
Single-center, retrospective study.


CONCLUSIONS
Observation of the pharynx by using NBI in patients with previous head and neck cancer or esophageal cancer or who have pharyngeal discomfort is very important. Moreover, pharyngeal cancer was certainly found in the male patients undergoing screening endoscopy, although the rate was lower.
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Hiroyoshi
H
Nakanishi
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Hisashi
H
Doyama
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Kenichi
K
Takemura
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Naohiro
N
Yoshida
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Kunihiro
K
Tsuji
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yasuhito
Y
Takeda
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yoshiro
Y
Asahina
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yosuke
Y
Kito
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Renma
R
Ito
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Tomoyuki
T
Hayashi
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Katsura
K
Hirano
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yoshinori
Y
Goto
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Kei
K
Tominaga
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Satoko
S
Inagaki
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yohei
Y
Waseda
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Shigetsugu
S
Tsuji
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Kazuhiro
K
Miwa
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Yoshibumi
Y
Kaneko
Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Shinya
S
Yamada
Department of Diagnostic Pathology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Hiroshi
H
Kurumaya
Department of Otorhinolaryngology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Makoto
M
Sakumoto
Department of General Practice, Ishikawa Prefectural Central Hospital, Ishikawa, Japan.
Toshihide
T
Okada
D000368:Aged; D016145:Endoscopy, Digestive System / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062048:Narrow Band Imaging; D010610:Pharyngeal Neoplasms / Q000175:diagnosis*; D012189:Retrospective Studies; D013997:Time Factors