title: Rectal carcinoid tumor in a renal transplant patient.
abstract: Malignancy represents a leading cause of morbidity and mortality in patients with a long-term surviving graft. Carcinoid tumor is a common primary endocrine tumor in the general population that is rare in transplant recipients. Our present report focused on a 48-year-old man who received immunosuppressive therapy based on cyclosporine and steroids. Twelve years after renal transplantation, he suffered watery diarrhea and abdominal discomfort. Colonoscopy showed a hard, sessile mass at 5 cm from the anal verge; endoscopic ultrasound showed a 13-mm homogenous hypoechoic mass. Upon endoscopic biopsy, the histological examination revealed a carcinoid tumor. Immunosuppresion was reduced and we performed endoscopic mucosal resection of the rectum. His clinical course has been good with no demonstrated recurrence.
authors.affiliation: Department of Internal Medicine, Kidney Institute, Keimyung University, Dongsan Medical Center, Daegu, Korea.
authors.forename: K B
authors.initials: KB
authors.lastname: Jin
authors.forename: E A
authors.initials: EA
authors.lastname: Hwang
authors.forename: S Y
authors.initials: SY
authors.lastname: Han
authors.forename: S B
authors.initials: SB
authors.lastname: Park
authors.forename: H C
authors.initials: HC
authors.lastname: Kim
authors.forename: K Y
authors.initials: KY
authors.lastname: Kwon
authors.forename: H T
authors.initials: HT
authors.lastname: Kim
authors.forename: W H
authors.initials: WH
authors.lastname: Cho
authors.forename: J H
authors.initials: JH
authors.lastname: Kwak
authors.forename: K S
authors.initials: KS
authors.lastname: Ahn
mesh_terms: D002276:Carcinoid Tumor / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D016896:Treatment Outcome; D014463:Ultrasonography