title: Sporadic intra-abdominal desmoid tumor: a unusual presentation.
abstract: Desmoid tumors are rare potentially aggressive benign tumors. Various etiologies and recurrent factors have been presented and discussed. A case of an abdominal desmoid tumor with vascular mesenteric invasion in a 32-year-old female, over 2 years after pregnancy is presented. Pre-operative biopsy was not contributive, diagnosis was made after surgery. Resection required two vascular bypasses. Desmoid tumors appear frequently in women of child-bearing age (during or after pregnancy), hormonal signaling is probably involved, but pathways remain unknown. Multiple predictive factors of recurrence are discussed but not strongly identified due to underpowered studies: resection margins, age, sex, tumor's size and location. Recent development is in favor of a non-aggressive treatment such as 'wait and see' procedures. Without radical treatment, these tumors could generate bowel compression or perforation. Due to their location and high risk of complication, surgery is the most fitted option.
authors.affiliation: Department of Digestive and Oncological Surgery, Edouard Herriot University Hospital, Lyon Cedex 03, France.
authors.forename: Antoinette
authors.initials: A
authors.lastname: Lasseur
authors.affiliation: Department of Digestive and Oncological Surgery, Edouard Herriot University Hospital, Lyon Cedex 03, France arnaud.pasquer@chu-lyon.fr.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Pasquer
authors.affiliation: Department of Vascular Surgery, Edouard Herriot University Hospital, Lyon Cedex 03, France University of Lyon, Claude Bernard Lyon 1, Villeurbanne Cedex, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Feugier
authors.affiliation: Department of Digestive and Oncological Surgery, Edouard Herriot University Hospital, Lyon Cedex 03, France University of Lyon, Claude Bernard Lyon 1, Villeurbanne Cedex, France INSERM, UMR 1052, Lyon Cancer Research Center, Laennec Faculty, Lyon Cedex 08, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: Poncet