title: Perivascular epithelioid cell tumor (PEComa) of the ascending colon: the implication of IFN-α2b treatment.
abstract: A 7-year-old boy presented with hematochezia and abdominal pain. A 3.7-cm-sized mass was identified in the ascending colon by abdominal computed tomography and colonoscopy. The patient underwent surgical resection. Pathological examination revealed a low-grade perivascular epithelioid cell tumor (PEComa). PEComa in the colon is very rare. Only a few cases have been reported so far. An effective treatment method for this rare tumor has not been established yet. The patient received adjuvant interferon-α immunotherapy for 1 year. He has been tumor-free for 26 months since the initial diagnosis. This report is the first documented case of the use of interferon-α for pediatric PEComa of the colon.
authors.affiliation: Department of Pediatrics, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Sun Ju
authors.initials: SJ
authors.lastname: Park
authors.forename: Dong Kyun
authors.initials: DK
authors.lastname: Han
authors.forename: Hee Jo
authors.initials: HJ
authors.lastname: Baek
authors.forename: Sang Young
authors.initials: SY
authors.lastname: Chung
authors.forename: Jong Hee
authors.initials: JH
authors.lastname: Nam
authors.forename: Hoon
authors.initials: H
authors.lastname: Kook
authors.forename: Tai Ju
authors.initials: TJ
authors.lastname: Hwang