title: Intramucosal carcinoma of the appendix arising from traditional serrated adenoma.
abstract: Introduction. Serrated adenomas of the appendix are rare and usually found during appendectomy or autopsies. The preoperative diagnosis of these tumors is uncommon. This report describes a case of a sessile serrated adenoma located in the appendix diagnosed by a screening colonoscopy and successfully treated by laparoscopic removal. Presentation of Case. An 86-year-old woman underwent colonoscopy to investigate the cause of her diarrhea, weight loss, and anemia. During the colonoscopy, an expansive and vegetating mass of 1.5 cm in diameter was identified, protruding through the appendicular ostium with slightly lateral growth to the cecum. The patient was referred for laparoscopic surgical resection due to the location of the lesion, which did not allow its removal by colonoscopy. She underwent wedge removal of the cecum without complications and was discharged on the 4th postoperative day. Histopathological examination showed the presence of a sessile serrated adenoma with an intramucosal adenocarcinoma. The patient is currently well one year after surgery, without endoscopic signs of relapse. Conclusion. Despite serrated adenomas being a possibility rarely described in appendix it should be recognized and properly treated because it is presenting a higher risk of cancer.
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Carlos Augusto Real
authors.initials: CA
authors.lastname: Martinez
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Júlia
authors.initials: J
authors.lastname: Cutovoi
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Debora Helena
authors.initials: DH
authors.lastname: Rossi
authors.affiliation: Gastrocentro, Universidade Estadual de Campinas, Rua Carlos Chagas, No. 420, Cidade Universitária "Zeferino Vaz", 13083-878 Campinas, SP, Brazil.
authors.forename: Luciana Rodrigues
authors.initials: LR
authors.lastname: Meirelles
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Maria de Lourdes Setsuko
authors.initials: Mde L
authors.lastname: Ayrizono
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Raquel Franco
authors.initials: RF
authors.lastname: Leal
authors.affiliation: Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Rua Tessália Vieira de Camargo, No. 126, Cidade Universitária "Zeferino Vaz", 13083-887 Campinas, SP, Brazil.
authors.forename: Cláudio Saddy Rodrigues
authors.initials: CS
authors.lastname: Coy