title: [A case of superficial carcinoma in a diverticulum of the thoracic esophagus].
abstract: An upper gastrointestina(l GI) series revealed a diverticulum in the anterior wall of the middle thoracic esophagus of a 72-year-old man. Endoscopy revealed a type 0-IIc lesion in the esophageal diverticulum. The margin of the lesion was unclear. Biopsy proved that it was squamous cell carcinoma. Endoscopic ultrasonography showed that the deepest layer of the tumor was the lamina propria mucosae (cT1a-LPM) and that the underlying muscularis propria was thinning. No distant metastasis or regional lymph node metastasis was detected. Diverticulectomy or endoscopic submucosal dissection (ESD) was out of indication due to the unclear margin and thin muscularis propria. We conducted mediastinoscopy-assisted esophagectomy. The pathological diagnosis of the resected specimen was moderately differentiated squamous cell carcinoma with invasion to the lamina propria mucosae (pT1a-LPM). Pathological examination proved the thinning of the underlying muscularis propria in the diverticulum. The patient is alive without recurrence at 6 months after surgery.
authors.affiliation: Dept. of Gastroenterological Surgery, Saitama Cancer Center.
authors.forename: Hideki
authors.initials: H
authors.lastname: Ishikawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Fukuda
authors.forename: Daiji
authors.initials: D
authors.lastname: Oka
authors.forename: Miwako
authors.initials: M
authors.lastname: Arima
authors.forename: Satoshi
authors.initials: S
authors.lastname: Nakamura
authors.forename: Toshiro
authors.initials: T
authors.lastname: Ogura
authors.forename: Isao
authors.initials: I
authors.lastname: Kikuchi
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Noda
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Yokoyama
authors.forename: Hidetsugu
authors.initials: H
authors.lastname: Hanawa
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Ehara
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Yamada
authors.forename: Toshimasa
authors.initials: T
authors.lastname: Yatsuoka
authors.forename: Youji
authors.initials: Y
authors.lastname: Nishimura
authors.forename: Katsumi
authors.initials: K
authors.lastname: Amikura
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kawashima
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Sakamoto
authors.forename: Masafumi
authors.initials: M
authors.lastname: Kurosumi
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Tanaka
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D004240:Diverticulum / Q000601:surgery*; D004938:Esophageal Neoplasms / Q000473:pathology / Q000601:surgery*; D016629:Esophagectomy; D006801:Humans; D008297:Male; D009367:Neoplasm Staging; D016896:Treatment Outcome