title: An obstructing large schwannoma in the esophagus.
abstract: Esophageal schwannoma is very rare neoplasm, which is difficult to diagnose by endoscopy or radiologic evaluations. The diagnosis is not confirmed until immunohistochemical tests are performed after a surgeon has resected the lesion. We present the case of a 65-year-old male patient with an esophageal schwannoma having a palpable neck mass and severe dysphagia. The postoperative pathological findings revealed a strong immunoactivity to S-100 protein but negative activity to smooth muscle actin and C-kit. These results support the characteristics of schwannoma in the tumor.
authors.affiliation: Department of Surgery, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-752, South Korea.
authors.forename: Ho Young
authors.initials: HY
authors.lastname: Yoon
authors.forename: Choong Bai
authors.initials: CB
authors.lastname: Kim
authors.forename: Yoon Hee
authors.initials: YH
authors.lastname: Lee
authors.forename: Ho Geun
authors.initials: HG
authors.lastname: Kim
mesh_terms: D000368:Aged; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000175:diagnosis* / Q000473:pathology