title: Metachronous schwannoma in the colon with vestibular schwannoma.
abstract: We experienced a case of vestibular schwannoma and metachronous schwannoma in the colon. A 59-year-old female presented with a 1-month history of hematochezia. She had undergone suboccipital craniectomy resulting in radical subtotal resection, followed by gamma knife radiosurgery for a large left vestibular schwannoma 4 years prior to admission. On preoperative colonoscopy, a huge mass through which the colonoscope could not be passed was detected. CT scans showed colo-colonic intussusception with a 4.8-cm-sized mass in the descending colon. PET/CT revealed hypermetabolism of the descending colon tumor and pericolic lymph nodes. We performed left hemicolectomy under the preoperative impression of colon cancer with intussusception. A pathological diagnosis of benign schwannoma of the colon was made in this patient.
authors.affiliation: Department of Surgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Eun-Joo
authors.initials: EJ
authors.lastname: Jung
authors.affiliation: Department of Pathology, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Han
authors.affiliation: Department of Neurosurgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Young-Cho
authors.initials: YC
authors.lastname: Koh
authors.affiliation: Department of Neurosurgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Joon
authors.initials: J
authors.lastname: Cho
authors.affiliation: Department of Surgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Chun-Geun
authors.initials: CG
authors.lastname: Ryu
authors.affiliation: Department of Surgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Paik
authors.affiliation: Department of Surgery, Colorectal Cancer Center, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Dae-Yong
authors.initials: DY
authors.lastname: Hwang
keywords: Colon neurilemmoma; Craniectomy; Gamma knife radiosurgery; Schwannoma